CN1871743A

CN1871743A - Antenna coil and RFID-use tag using it, transponder-use antenna

Info

Publication number: CN1871743A
Application number: CNA028234596A
Authority: CN
Inventors: 远藤贵则; 八幡诚朗; 土田隆; 米泽政
Original assignee: Mitsubishi Materials Corp
Current assignee: Mitsubishi Materials Corp
Priority date: 2001-09-28
Filing date: 2002-09-26
Publication date: 2006-11-29
Also published as: JP2003108966A; JP4196554B2

Abstract

An antenna coil 10 comprises an air-core coil 12 which is wound helically in a plane and a plate magnetic core member 13 which is inserted in the air-core coil 12 so as to be approximately parallel with a plane of the air-core coil 12. The magnetic core member 13 is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member 13 is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member 13 is a magnetic coating which is formed by applying and drying the composite member. A non-magnetic conductive plate 14 which has a conductivity is layered on a surface of the air-core coil 12 through which the magnetic core member 13 is inserted. The conductive plate 14 is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. By doing this, it is operated by relatively high frequency while it is rigid relatively.

Description

Aerial coil and the radio-frequency (RF) identification of using this aerial coil are with label, transponder antenna

Technical field

The present invention relates to use RFID (radio-frequency (RF) identification: technology or EAS (electronic type article surveillance: employed aerial coil on the identification label of technology Electronic ArticleSurveillance) Radio FrequencyIdentification).

In addition, the invention relates to use EAS (electronic type article surveillance: the transponder antenna of the label of technology or read-write equipment etc. ElectronicArticle Surveillance).In more detail, the present invention relates to have the scroll coil and be installed to transponder antenna on the article.

Background technology

In the past, known as the label that uses RFID technology or EAS technology, be with information stores in the aerial coil the IC chip or the identification label that resonance is electrically connected with capacitor.The structure that this identification label is known is, send to aerial coil by radio wave from the given frequency of transceiver sky bundle of lines of interrogator, intensify label, read by means of wireless data communication, read the information that is stored on the IC chip according to instruction, perhaps, discern or monitored item according to the situation that whether produces resonance with respect to the radio wave of characteristic frequency.

As the aerial coil in the past that is used for this identification label, known is forming on the bar-shaped core components, is the center with the axis of this core components, with the Wire-wound curl.When using the label of this aerial coil, under the situation that the management object article are formed by metal, for fear of the influence that is subjected to the metallic article, be fixed on the article inserting thick 5～10mm between aerial coil and the article and having under the state of dividing plate of electrical insulating property.But, above-mentioned aerial coil in the past, because the diameter of core components is bigger, the interval between metallic article and the aerial coil is just bigger, the result exists aerial coil significantly outstanding drawback from the article of management object.

In order to eliminate this defective, a kind of aerial coil (spy opens 2000-48152) has been proposed, this aerial coil planar is wound in the air core coil of scroll, to insert core components with the mode of the plane almost parallel of this air core coil.The core components of this aerial coil, form by noncrystalline sheet material or electromagnetic steel plate, by to insert core components with the mode of the plane almost parallel of air core coil, can make the thickness of aerial coil itself thin as much as possible, simultaneously, by means of allowing magnetic flux pass core components, this flow direction is paralleled with the article surface that aerial coil is installed, make the block board thickness attenuation that is inserted between aerial coil and the article, thereby can reduce in the past aerial coil from the overhang of the article of management object.

But, open in the aerial coil of 2000-48152 above-mentioned spy, because core components is made by noncrystalline sheet material or electromagnetic steel plate, though can obtain the Q value that under the about 100kHz of frequency, to use, but under the high frequency situations of radio wave frequency for number MHz～tens of MHz, will on the noncrystalline sheet material of core components or electromagnetic steel plate, produce vortex flow, the drawback of bringing the Q value to reduce.Particularly in recent years, utilize the label of the RFID technology of the frequency work by 13.56MHz, practicability, such label with the work of high radio frequency ripple also has the drawback that can not use above-mentioned spy to open the aerial coil of 2000-48152.

On the other hand, though sintered ferrite as the technology of the core components that can be used for this high frequency aspect, for a long time, is known for people.But, because sintered ferrite has the character of comparison fragility, in particular for the aerial coil that obtains approaching, when forming relatively thinner this sintered ferrite plate as core components, this core components just is very easy to break, and exists the narrower problem of actual environment for use.On the contrary, when using thicker sintered ferrite as core components, can cause again owing to increased the thickness of aerial coil itself, and can not realize reducing the problem of the purpose of the overhang of aerial coil from the article of management object in order to improve rigidity.

In addition, also there is following otherwise requirement in conventional art.

As the aerial coil in the past that is used for identification label, known is to have surface coverage the coil of wire coiled of insulating barrier to be roughly foursquare scroll, stick to and form on the substrate, perhaps as shown in figure 24, conductive layers such as being layered in aluminium foil on the substrate 1 or Copper Foil is removed unwanted part with etching method or blanking method etc., form the slightly scroll coil body 2 of quadrate.

But, in the aerial coil shown in Figure 24, magnetic flux is pressed mode shown in the arrow among the figure, on the direction that connects substrate 1 along above-below direction, produce, when being close to this aerial coil on the metal, the radio wave that sends signal towards aerial coil can further see through metal through behind this substrate 1.Thus, this magnetic flux that sees through just produces vortex flow on the metal part, be subjected to the influence of this vortex flow, can cause the problem of aerial coil cisco unity malfunction.In addition, if carry out work, also can increase its loss, the defective of bringing the operating distance of aerial coil significantly to shorten.

In order to address these problems, known have aerial coil shown in Figure 23 to have to form tabular or cylindric etc. core components 6 and be wrapped in conductor 7 on this core components 6 with helical form.The aerial coil that this is shown in Figure 23, because magnetic flux is to produce along the axis direction of the core components shown in the arrow 6 among the figure, so, even this aerial coil is installed on the metal, the radio wave that sends signal towards aerial coil can not see through metal yet, can expect that this aerial coil can normally work.

Yet aerial coil shown in Figure 23 owing to make by conductor 7 is wrapped on core components 6 outer peripheral faces, so the spiral operation is more numerous and diverse, exists the problem that is unsuitable for producing in batches.In addition, owing to will be wrapped in conductor 7 on the outer peripheral face of core components 6, it is thicker that aerial coil integral body just becomes, and when on the surface that this aerial coil is installed to article, also can bring this aerial coil remarkable distinct issues from the article.

In addition, other requirements as conventional art also have following situation.

As the aerial coil in the past that is used for identification label, be after having surface coverage the coil of wire coiled of insulating barrier to be roughly foursquare scroll, stick to and form on the substrate, perhaps as shown in figure 24, form the scrollwork part 202 that is roughly square scroll being layered in conductive layers such as aluminium foil on the substrate 1 or Copper Foil with etching method, these are known for people.

In addition, as other aerial coils, as shown in figure 23, aerial coil has and forms tabular or cylindric etc. core components 6 and be wrapped in conductor 7 on this core components 6 with helical form, and this aerial coil also has been a known technology.

On the other hand, the aerial coil that this is shown in Figure 23, because magnetic flux is to produce along the axis direction of the core components shown in the arrow 6 among the figure, even so this aerial coil is installed on the metal, the radio wave that sends signal towards aerial coil can not see through metal yet, and can expect that aerial coil can operate as normal.But aerial coil shown in Figure 23 owing to make by conductor 7 is wrapped on core components 6 outer peripheral faces, so the spiral operation is more numerous and diverse, exists the problem that is unsuitable for producing in batches.In addition, because aerial coil integral body becomes thicker, so, when on the surface that this aerial coil is installed to article, also can bring this aerial coil from the remarkable distinct issues of article.

As for transponder in the past, following requirement is arranged then.

Transponder in the past is well known that, has antenna and the IC chip that is electrically connected to the information of the article of storage related management object on this antenna; And have antenna and be electrically connected to capacitor on this antenna.

The structure that the IC chip is connected the transponder on the antenna is as follows: send to antenna by the radio wave from the given frequency of transceiver sky bundle of lines of interrogator and activate, by means of reading of the data communication of radio wave, read the data that are stored on the IC chip according to instruction, according to the instruction that writes data are write in this IC chip, perhaps read and write.This transponder, the transmitting-receiving of the multiple information such as storage of the individual identification in the time of can being used for entry and exit control, the time that goes out to enter the room, in addition, in manufacturing process, then can be used for receiving and dispatching the transmitting-receiving of multiple information such as management of storage, the check result of indication, the processing of goods treatment conditions.

On the other hand, have capacitor to be connected to transponder on the antenna, it keeps intrinsic resonance frequency, and the resonance of the radio wave of the given frequency of sending by interrogator, produce radio wave, according to this radio wave, whether interrogator can identify is the transponder that maintains given frequency.This transponder is compared with the transponder of band IC chip, though can not receive and dispatch multiple information, has advantage of simple structure.For example,, then can measure the number of entering the room if this transponder is used to the management aspect that to enter the room, when being used for the management of manufacturing process, the quantity of can the instrumentation goods passing through.Here,, then can carry out instrumentation to being divided into multiple various kinds if use the different transponder of resonance frequency, for example, can the instrumentation men and women, adult or children.Moreover, if be installed on the commodity in shop etc.,, then can monitor the stolen situation of commodity by interrogator is set in the exit, so just can prevent that the situation of illegally taking commodity out of from taking place.

The antenna that is used for so in the past transponder in order to make the thickness of transponder thin as best one can, uses the structure that forms by following manner:, stick on the substrate the surface-coated roughly foursquare scroll of coil of wire coiled that insulating barrier is arranged; Perhaps conductive layers such as being layered in aluminium foil on the substrate or Copper Foil being removed with etching method or blanking method etc. does not need part, forms scroll.The transponder that has antenna like this, under the situation that the article of management object are formed by metal, for fear of the influence that is subjected to metal, be under the state of 5～10mm and the dividing plate that electrical insulating property is arranged inserting thickness between transponder and the article, use Screw etc. is fixed to transponder on the article.

But, above-mentioned transponder in the past is because the thickness of dividing plate is thicker, so even antenna itself is thin as much as possible, interval between metal and the transponder still can be bigger, also still exists transponder significantly outstanding drawback from the article of management object.Thus, in the article carrying process, transponder is contacted with on every side article.

Summary of the invention

The objective of the invention is, a kind of aerial coil that in use can access high stiffness and upper frequency is provided.

Another object of the present invention is, provides a kind of and need not insert dividing plate between aerial coil and article, compares with conventional art the aerial coil that can reduce the overhang of aerial coil from the article of management object.

A further object of the present invention is, is close on the metal even provide a kind of, also can work reliably, and the label aerial coil that can form with thickness as thin as a wafer also provides a kind of label aerial coil that is suitable for producing in batches simultaneously.

A further object of the present invention is, a kind of thickness of approaching of can keeping is provided, the label that can work reliably under the prerequisite that is close on the metal is with aerial coil and use the RFID label of this aerial coil again, and provides a kind of label that is suitable for producing in batches with aerial coil and use the RFID label of this aerial coil.

A further object of the invention is formed by material arbitrarily even just provide a kind of surface of article of management object, does not also need the transponder antenna that uses dividing plate just can directly install.

The invention of the application's the 1st form is the improvement of aerial coil, this aerial coil as shown in Figures 1 and 2, comprise: planar be wound into the air core coil 12 of scroll, and the tabular core components 13 of inserting air core coil 12 in the mode on the plane that is roughly parallel to air core coil 12.

Formation with this feature is: core components 13 is formed by the composite material of soft magnetic metal, noncrystalline or ferrite dust or thin slice and plastics or rubber.

In the aerial coil of the application's the 1st form record, because core components 13 is formed by composite material, compare with the core components that ferrite sintered body by fragility forms, have toughness, constitute core components 13 by using by composite material, can guarantee the rigidity of aerial coil.

In addition, because composite material is to be dispersed in plastics or the rubber with soft magnetic metal, noncrystalline or ferrite, and mutually insulated, thereby do not have conductivity,, can not produce vortex flow yet even accept high frequency radio wave by the core components 13 that composite material constitutes.So even under higher frequency, the generation that also can not take place because of vortex flow reduces the Q value, thereby can obtain the aerial coil that under upper frequency, also can fully use.

The invention of the application's the 2nd form is such aerial coil, and its core components 13 is by forming composite material injection molding forming or die forming or by rolling postforming.

In the aerial coil of the application's the 2nd form record, the forming of core components 13 that is made of composite material is easy to, and can form thin core components 13 and reduces it from the outstanding amount of article.

The invention of the application's the 3rd form is such aerial coil, and its core components 13 is by the coating composite material and carries out dry formed magnetic coating film.

In the aerial coil of the application's the 3rd form record, the following core components 13 of thick 0.8mm that injection molding forming or die forming aspect are difficult to be shaped can be obtained, thickness aerial coil as thin as a wafer can be formed.Thereby, can suppress to be installed to the overhang from the article of aerial coil under the situation on the article significantly.

The invention of the application's the 4th form is the improvement of aerial coil, and this aerial coil comprises: planar be wound into the air core coil 12 of scroll, and the tabular core components 13 of inserting air core coil 12 in the mode on the plane that is roughly parallel to air core coil 12.

Formation with this feature is on a face of the air core coil 12 that inserts core components 13, to be laminated with the conductive plate 14 of non magnetic and tool conductivity.

Aerial coil for the record of the application's the 4th form, when this aerial coil is installed on the article that formed by metal, make conductive plate 14 between these article and air core coil 12, when sending radio wave, conductive plate 14 can shield radio wave the passing through to article by air core coil 12, therefore, on the installed surface of article, can not produce vortex flow.As a result, do not need the dividing plate that is inserted between aerial coil and the article in the past that aerial coil is worked reliably.In addition, the core components 13 of the aerial coil of this 4th form is to be made by noncrystalline sheet material or electromagnetic steel plate, even thereby air core coil 12 with lower frequency work, also be effective.

The invention of the application's the 5th form is such aerial coil, and conductive plate 14 wherein is to be made of copper or copper alloy or aluminum or aluminum alloy.

Can obtain the conductive plate 14 that radio wave shield reliably sees through article in the aerial coil of the application's the 5th form record.

The invention of the application's the 6th form is such aerial coil, and the thickness of its conductive plate 14 is 0.01～2mm.

In the aerial coil of the application's the 6th form record, can form as thin as a wafer owing to have this aerial coil of conductive plate 14, therefore, even article are formed by metal, also can suppress its overhang from the article, can prevent in this article carrying aerial coil and contacting of object on every side.

The invention of the application's the 7th form is such aerial coil, and this aerial coil such as Fig. 4 and shown in Figure 5 comprise: the insulating element 111 that is formed by electrical insulating film or electric insulation sheet material; On the surface of insulating element 111, wriggle and alternately form toward 112a of road portion and a series of electric conductors 112 that return the 112b of road portion; And be bonded in insulating element 111 back sides, with do not overlap toward the 112a of road portion, and cover first core components 113 of returning the 112b of road portion from the back side of insulating element 111.

In the aerial coil of the application's the 7th form record, because first core components 113 is bonded in the back side of insulating element 111, therefore, the magnetic flux that electric current produced that flows through electric conductor 112 sees through first core components 113, the loop shown in depiction 4 solid arrows, surperficial parallel with article 18, like this, even it is metal that the article surface of aerial coil is installed, not influenced by it, this aerial coil can be worked reliably.

In addition, because first core components 113 is bonded in the back side of insulating element 111, make this first core components 113 and do not overlap toward the 112a of road portion, but return the 112b of road portion from the back side covering of insulating element 111, therefore, shown in Fig. 4 enlarged drawing dotted arrow, see through the magnetic flux of first core components 113, the part of its end spreads and sees through the top of the past 112a of road portion, returns first core components 113 of adjacency once more.Therefore, comprise this and become same parts toward the 112a of road portion and a series of electric conductors 112 that return the 112b of road portion and the aerial coil that is wound on around this a part of magnetic flux.

The invention of the application's the 8th form is such aerial coil, this aerial coil such as Figure 6 and Figure 7, on the surface of insulating element 111, be bonded with second core components 114, make this second core components 114 and return the 112b of road portion and do not overlap, and cover toward the 112a of road portion, and its end overlaps with the end of first magnetic part 113 of adjacency, and 114 of second core components constitute: the face side that directs into insulating element 111 by the magnetic flux of first magnetic part 113 at past road portion 112a place.

In the aerial coil of the application's the 8th form record, see through the magnetic flux of first magnetic part 113, shown in Fig. 6 solid arrow, Yi Bian alternately move along first and second core components 113,114, Yi Bian by this first and second core components 113,114.Therefore, toward the 112a of road portion with return the surface and the back side that the 112b of road portion alternately is in magnetic flux, comprise this toward the 112a of road portion and a series of electric conductors 112 that return the 112b of road portion with to be wound on this magnetic flux aerial coil on every side identical.The result, can obtain aerial coil 10 with comparalive ease, this aerial coil 10 has and the identical characteristic of aerial coil in the past that Wire-wound is made on the outer peripheral face of core components, compares with the aerial coil of in the past coiling copper cash, can improve mass productivity.

The invention of the application's the 9th form is such aerial coil, this aerial coil such as Fig. 8 and shown in Figure 9, electric conductor 112 has to separate given interval, to follow and sinuous the lip-deep multiple conducting

wires

21,22 that is formed on insulating element 111 each other, the top portion of the terminal part of lead 21 and the lead of adjacency 22 links together, and constitutes a series of electric conductors 112.

In the aerial coil of the application's the 9th form record, the number that alternately is in the past road 21a of portion, the 22a at the surface of the magnetic flux by first and second core components 113,114 and the back side and returns the 21b of road portion, 22b increases to some extent.Therefore, make the number of turns of so-called coiling be easy to increase,, can improve the performance of aerial coil by increasing the number of turns of these coilings.

The invention of the application's the 10th form is such aerial coil, by carrying out etching with given pattern to being adhered to insulating element 111 whole lip-deep conductivity paper tinsels, perhaps electric conducting material with given pattern silk screen printing or evaporation to the surface of insulating element 111, on the surface of insulating element 111, form electric conductor 112.

In the aerial coil of the application's the 10th form record, be easy on the surface of insulating element 111, form electric conductor 112, thus the batch process that has further improved aerial coil.

The invention of the application's the 11st form is such aerial coil, wherein the either or both of first core components 113 and second core components 114 employing soft magnetic metal, noncrystalline or the powder of ferrite composition or the composite material of thin slice and plastics, plate or paper tinsel, noncrystalline paper tinsel or its stacking material or the ferrite of soft magnetic metal.

In the aerial coil of the application's the 11st form record, first core components 113 or second core components 114 are thinner, because it is very thin to account for most first core components 113,114 of aerial coil 10 thickness directions, and then can make the thickness attenuation of aerial coil integral body.

The invention of the application's the 12nd form is such aerial coil, wherein the either or both of first core components 113 and second core components 114 is to be made of magnetic coating film, this magnetic coating film is by containing the ink of magnetic or applying coating to insulating element 111, makes it dry and forms.

In the aerial coil of the application's the 12nd form record, can access the core components 113,114 of the following thickness of 0.8mm that the injection molding forming aspect is difficult to be shaped, the thickness that can make aerial coil is with extremely thin form formation.Thereby, can be suppressed at the overhang from the article of aerial coil under the situation about being installed on the article significantly.

The invention of the application's the 13rd form is such aerial coil, wherein is bonded with sheet or tabular conductive component 116 at the back side of insulating element 111 in the mode that covers first core components 113.

In the aerial coil of the application's the 13rd form record, because conductive component 116 is between electric conductor 112 and article, therefore, this conductive component 116 can shield the radio wave by article.Even article surface is formed by metal, the loss that is caused by vortex flow that produces on this metal covering etc. can not take place yet.The result can make aerial coil work reliably.

The invention of the application's the 14th form is such label aerial coil, and this label comprises: the coil body 211a that planar is wound into conductor 211 formations of scroll with aerial coil such as Figure 11 and shown in Figure 12; And be positioned at the central portion 211b that surrounds by coil body 211a and the part of crosscut coil body 211a, the mode that other end 213b is positioned at the outside of coil body 211a with an end 213a, be bonded in the tabular or sheet core components 213 on face of coil body 211a.

The label of the application's the 14th form record is with in the aerial coil, because the part of core components 213 crosscut coil body 211a, so can improve the Q value of aerial coil.In addition, the magnetic flux that electric current produced that flows through the coil body 211a that is formed by conductor 211 sees through core components 213, depicts the loop shown in Figure 11 arrow as.This flow direction is surperficial parallel with article, even this label is installed on the surface that is formed by metal of article with aerial coil, also can suppress to produce vortex flow on the surface of these article, and this aerial coil can be worked reliably.

The invention of the application's the 15th form is such label aerial coil, and wherein coil body 211a is by carrying out stamping-out formation to electrically conductive plate or paper tinsel.

The label of the application's the 15th form record is easy to form coil body 211a with in the aerial coil, can improve the productivity ratio of aerial coil.

The invention of the application's the 16th form is such label aerial coil, it is by carrying out etching to the conductivity paper tinsel on whole an of interarea being adhered to electrical insulating film or sheet material 212 by given pattern, perhaps electric conducting material by given pattern silk screen printing or evaporation to an interarea of electrical insulating film or sheet material 212 and form coil body.

The label of the application's the 16th form record is with in the aerial coil, owing to be that lead 211 is arranged on electrical insulating film or the sheet material 212, so install easily, only need just can obtain aerial coil by the better simply operation on another interarea that core components 213 is bonded in film or sheet material 212 stackedly.With the existing shown in Figure 23 aerial coil of Wire-wound on the outer peripheral face of core components compared, can improve mass productivity.

The invention of the application's the 17th form is such label aerial coil, wherein core components 213 is the plate of composite material, soft magnetic metal of the powder formed with soft magnetic metal, noncrystalline or ferrite or thin slice and plastics or paper tinsel, noncrystalline paper tinsel or its stacking material, ferrite, or the ink that contains magnetic or applying coating on electrical insulating film or sheet material and make it dry formed magnetic coating film.

The label of the application's the 17th form record because core components 213 is thinner, accounts for aerial coil thickness direction most core components attenuation by making with in the aerial coil, can make the thickness attenuation of aerial coil integral body.

The invention of the application's the 18th form is such label aerial coil, wherein core components 213 is magnetic coating films, this magnetic coating film is by containing the ink of the powder that is magnetic or applying coating to another interarea of electrical insulating film or sheet material 212, makes it dry and forms.

The label of the application's the 18th form record can obtain the following core components 213 of thick 0.8mm that injection molding forming or die forming aspect are difficult to be shaped with in the aerial coil, can form thickness aerial coil as thin as a wafer.In addition, the suppressing antenna coil is installed under the situation on the article overhang from the article significantly.

The invention of the application's the 19th form is such label aerial coil, and wherein sheet or tabular conductive component 216 are bonded on the face of coil body 211a in the mode that covers core components 213.

The label of the application's the 19th form is with in the aerial coil, and its conductive component 216 is between coil body 211a that is formed by conductor 211 and article the time, and these conductive component 216 maskable radio waves are through article.Thereby, even the surface of article is made of metal, the loss that the vortex flow that produced by this metal surface etc. causes can not take place yet, and can work reliably.

The invention of the application's the 20th form is such RFID label, and it comprises: be installed to the aerial coil 10 that the 14th～19 form of the application on the article 18 is put down in writing in each; And be electrically connected on the aerial coil 10 and store the IC chip of the different intrinsic information of each article 18, this aerial coil 10 is installed on the article 18, and core components 213 is then between article 18 and coil body 211a.

The RFID of the application's the 20th form with in the label when core components 213 being configured in a side that article 18 are connected, flow through the magnetic flux that electric current produced of coil body 211a, mainly see through this core components 213, see through the then minimizing of article 18.Therefore, no matter whether article 18 are made of metal, aerial coil 10 all seldom is subjected to its influence, can use the RFID of this aerial coil 10 to work reliably with label.

The invention of the application's the 21st form, be about transponder with the improvement of antenna, it is as Figure 15 and shown in Figure 16, is to be electrically connected on IC chip 313 or the capacitor and to be installed to transponder antenna on the article 311.

Structure with this feature is that it comprises: will form the flat back side and be installed to conductive component 314a on the article 311; Be wound on the surface of conductive component 314a with scroll by insulating element 316, and under adhesion, the state of reeling, adjust the coil body 314b that its volume number or scrollwork diameter can obtain given characteristic value.

The transponder of the application's the 21st form is with in the antenna, can adjust coil body 314b, it is being wound under the lip-deep state of conductive component 314a, can guarantee given characteristic value, therefore, if the IC chip is connected to transponder on the antenna, the radio wave by means of the given frequency of transceiver antenna transmission of the interrogator not shown in the figures from this antenna 314 just can activate label 12 reliably; If capacitor is connected to transponder on the antenna, then can carry out resonance with the radio wave that sends from interrogator reliably.In addition, utilize this antenna 314, coil body 314b is wound in advance on the surface of conductive component 314a, then can guarantee given particular value, even thereby this antenna 314 directly is installed on the article of the management object that metal forms, can not be subjected to the influence of this metal, therefore, the characteristic value of coil body 314b can not change significantly yet.As a result, do not need necessary space when antenna 314 was installed on the metal in the past, eliminated label 12 remarkable distinct issues from the article of management object.

The shape of conductive component 314a can be for example sheet material, plate or paper tinsel or conductor that the two ends of scroll are linked together, its width is 1cm, when length is 1cm its resistance 5

Below.

In addition, shown in the enlarged drawing of Figure 15, insulating element 316 can be a non-conductive material, for example, and sheet material, plate or the paper tinsel formed of polyethylene or poly-para Toluic Acid's glycol ester preferably.In this case, conductive component 314a can be with the dry conductive coating at such insulating element 316 back sides of conductivity ink coating.Can also be electrodeposited coating or the vapor-deposited film of for example Cu or Al etc. that is layered in the conductivity at these insulating element 316 back sides.In this case, used thickness is the insulating element 316 of 0.01mm～5mm, and the gap of conductive component 314a and coil body 314b 0.01～5mm preferably.

In addition, as shown in figure 17, can on the part that coil body 314b surrounded, form hole 314c by conductive component 314a.As shown in figure 19, soft magnetic member 26 can be installed between conductive component 314a and coil body 314b.Forming on the conductive component 314a of the middle body of coil body 314b under the situation of hole 314c, even because can on conductive component 314a vortex flow take place by the radio wave of coil body 314b, but because the existence of this hole 314c, this vortex flow only produces in the very narrow scope near coil body 314b, thereby can suppress the decline of the Q value of coil body 314b.On the other hand, if soft magnetic member 26 is between conductive component 314a and coil body 314b, by this soft magnetic member 26, can carry out electromagnetic shielding to coil body 314b, make it avoid the influence of conductive component 314a, the Q value of coil body 314b can be improved, the volume number that obtains the coil body 314b that given characteristic value implements or the adjustment of scrollwork diameter can be easier to carry out be.

The invention of the application's the 22nd form be about transponder with the improvement of antenna, as shown in figure 20, it is to be electrically connected on IC chip 313 or the capacitor and to be installed to transponder antenna on the article 311.

Structure with this feature comprises: will form the flat back side and be installed to soft magnetic member 26 on the article 311; And be wound on scroll on the surface of soft magnetic member 26, and under adhesion, the state of reeling, adjust its volume number or scrollwork diameter to obtain the coil body 314b of given characteristic value.

The transponder of the application's the 22nd form is with in the antenna, when under the state that antenna 314 is installed on the article 311 that form by metal, sending radio wave, because what soft magnetic member 26 shield radio wave direction metal part were divided sees through, so on this metal part, do not produce vortex flow.As a result,, do not need necessary in the past dividing plate, so can prevent in article 41 transport antenna 314 and contacting of object on every side even article 311 are formed by metal yet.

Here, soft magnetic member 26, its permeability and be long-pending being preferably in more than 0.5 of thickness of unit representation with mm.In addition, soft magnetic member 26 is preferably formed by any one the soft magnetic material in the ferritic quenching solidification material of amorphous alloy, permalloy, electromagnetism steel, silicon steel, alsifer, Fe-Al alloy or soft magnetism, founding materials, rolling stock, forged material or the agglomerated material.Moreover, soft magnetic member 26 preferably soft magnetic metal or soft magnetism ferrite or thin slice and plastics or rubber composite material or contain soft magnetic metal or the filming of the coating of soft magnetism ferrite or thin slice.Also have, the multiple thin slice that soft magnetic member 26 is preferably formed soft magnetic metal or soft magnetism ferrite, be bonded in the lip-deep adhesive sheet of the basis material sheet material of forming by plastics in thin slice mode bonded to each other.As soft magnetic member 26, preferably use multiple thin slice that soft magnetic metal or soft magnetism ferrite are formed, be configured on the surface of the basis material sheet material of forming by plastics in thin slice mode bonded to each other, use the cover sheets formed by plastics to cover, again the laminated sheet that basis material sheet material and cover sheets are bonded together.

Brief description of drawings

Fig. 1 is the plane graph of aerial coil of the present invention.

Fig. 2 be expression this aerial coil be installed to state on the article along sectional drawing that Figure 1A-the A line is cut open.

Fig. 3 is the plane graph of the air core coil of this aerial coil.

Fig. 4 is the sectional drawing of cutting open along Fig. 5 A-A line of the aerial coil of expression third embodiment of the invention.

Fig. 5 is the plane graph of this aerial coil.

Fig. 6 is the sectional drawing corresponding to Fig. 4 of the aerial coil of expression fourth embodiment of the invention.

Fig. 7 is the plane graph of this aerial coil.

Fig. 8 represents the sectional drawing corresponding to Fig. 4 of the aerial coil of third embodiment of the invention.

Fig. 9 is the plane graph of this aerial coil.

Figure 10 is the plane graph with aerial coil of the electric conductor that 3 leads form.

Figure 11 represents the sectional drawing of cutting open along Figure 12 A-A line of the aerial coil of fifth embodiment of the invention.

Figure 12 is the plane graph of this aerial coil.

Figure 13 is the sectional drawing corresponding to Figure 11 of the aerial coil of expression sixth embodiment of the invention.

Figure 14 is the plane graph of this aerial coil.

Figure 15 is the plane graph of the transponder that comprises antenna of seventh embodiment of the invention.

Figure 16 is the sectional drawing of cutting open along Figure 15 A-A line.

Figure 17 is the plane graph corresponding to Figure 15 that forms the transponder that comprises antenna in hole on this conductive component.

Figure 18 is the sectional drawing corresponding to Figure 16 of this antenna.

Figure 19 is the sectional drawing corresponding to Figure 16 that the 8th embodiment antenna of soft magnetic member is installed in the middle of the expression.

Figure 20 is the sectional drawing corresponding to Figure 16 that expression is installed to soft magnetic member on the 9th embodiment antenna on the article.

Figure 21 is the plane graph corresponding to Figure 15 of expression coil body when being quadrangle.

Figure 22 is the schematic diagram of the situation of the confirming operation that carries out transponder in the expression experimental example.

Figure 23 is that expression has the perspective view with the existing aerial coil of the conductor of helical coil on the core components.

Figure 24 is the perspective view of the existing aerial coil that partly is made of the scroll scrollwork of expression.

The optimised form that carries out an invention

Below, embodiments of the invention are described with reference to the accompanying drawings.

As shown in Figures 1 and 2, label of the present invention has with aerial coil 10: by planar conductor 11 being wound into the air core coil 12 that scroll constitutes; And to insert tabular core components 13 in this air core coil 12 with the mode of the plane almost parallel of this air core coil 12.This air core coil 12 can perhaps form electrically conductive plate by means of being wound into scroll as the coated electric wire of conductor 11 and forming by given pattern etching or stamping-out.In addition, air core coil 12 also can be by means of to being layered in that Copper Foil on electrical insulating film or the sheet material carries out that etching forms or by on the interarea of electrical insulating film or sheet material electric conducting material being carried out silk screen printing or evaporation formation with scroll.In this case, electrical insulating film or sheet material be necessary to form for example circularize etc., be used for hole that core components 13 is inserted air core coils 12 central portions.

Below, so that to carry out the example that etching forms air core coil 12 be representative to being layered in Copper Foil on the electrical insulating film 12a, describe, at first, all there is the film 12a of Copper Foil on the preparation two sides, as shown in Figure 3, form the first through hole 12b near the central portion of this film 12a, near the film outer rim this first through hole 12b nearby forms the second through hole 12c.Afterwards, with silk screen print method anti-etching coating is printed onto on the two sides of film 12a.On the face of film 12a, around first and second through

hole

12b, 12c, according to being that near the rectangle scroll that the inner, outer end are positioned at the second through hole 12c applies anti-etching coating with the first through hole 12b.And,, form the wide width part that produces by this coating in the outer end of coil.Then, on the another side of film 12a, apply anti-etching coating and make it dry, first and second through

hole

12b, 12c are linked together.Afterwards, remove the Copper Foil that does not have applying coatings, allow the Copper Foil of the part that is coated with anti-etching coating be retained on the film 12a by etching.

Then, remove anti-etching coating,, on the face of film 12a, form first and second through hole 12b, 12c first and second binding post 11a, 11b on every side by means of the Copper Foil that keeps from the Copper Foil that is retained on the film 12a; The coil portion 11c of the first binding post 11a as the rectangle scroll of the inner; And the intermediate connection terminal 11d of the wide width part of coil portion 11c outer end generation.Like this, on the another side of film 12a,, be formed for connecting the bonding conductor 11e of first and second through hole 12b, 12c by means of the Copper Foil that is kept.Afterwards, electroplate the inside to first and second through hole 12b, 12c, the first binding post 11a and bonding conductor 11e are linked together, and the second binding post 11b and bonding conductor 11e linked together, by means of bonding conductor 11e, first and second binding post 11a, 11b are electrically connected.Afterwards, use by punching press and offer the hole 12d that connects core components 13, obtain air core coil 12.Like this, by the Copper Foil that is layered on the electrical insulating film 12a is carried out in the resulting air core coil 12 of etching,, can form label by means of being connected IC or connecting capacitor between the second binding post 11b and the intermediate connection terminal 11d.

Turn back to Fig. 1 and Fig. 2, core components 13 is formed by composite material.Composite material is to be formed by soft magnetic metal, noncrystalline or ferrite dust or thin slice and plastics or rubber.As soft magnetic metal, preferably use carboxyl iron powder or the reduced iron powder that obtains attritive powder easily.Reduced iron powder obtains fine iron oxide under conditions such as hydrogen with low-temperature reduction.In addition, as soft magnetic metal, the iron, permalloy, the noncrystalline powder that preferably use the efflorescence method to make.As soft magnetic metal, can also use the resulting amorphous alloy thin slice of the copper surface collision after powder, alloying metal molten mass particle and the water-cooled, described powder is with the resulting powder of flattening mechanically such as ball mill or pulverizing mill the soft magnetic metal powder that obtains by the efflorescence method.

On the other hand, as plastics, preferably use resins such as propylene with insulating properties, polyester, polyvinyl chloride, polyethylene, polystyrene, epoxy.In addition, as rubber, can use natural rubber and buttress rubber etc. elastomeric any one.

Manufacture method as composite material, following method is suitable method, is about to soft magnetic metal, noncrystalline or ferrite or thin slice and mixes with the mixture of plastics or rubber powder, after this mixture pelletizingization, carry out injection molding forming or die forming, make it become given shape.When forming core components 13 by injection molding forming or die forming, can be with air core coil shown in Figure 2 12, when carrying out this shaping,, so just can obtain thin aerial coil 10 at an easy rate making flat stage portion 13a and core components 13 forms.In this case,, allow the soft magnetic metal orientation, then can further improve characteristic as aerial coil 10 if when the injection of said mixture or compression, magnetic field is applied on the magnetic direction.In addition, can also or with roller said mixture be rolled into tabular after, cut into oblong-shaped, perhaps die forming or be shaped with die casting.No matter use above-mentioned arbitrary method, make the soft magnetic metal orientation by applying magnetic field, can both improve its characteristic.

Under the situation of using soft magnetic metal or noncrystalline powder, its diameter can be preferably in the scope of 1～43im in the scope of 0.6～100im.At soft magnetic metal or noncrystalline is under the situation of thin slice, and its thickness can be preferably in the scope of 0.3～5im in the scope of 0.1～10im.When the diameter and the above-mentioned scope of soft magnetic metal or noncrystalline powder is in a ratio of under the thinner situation, the problem that loss that vortex flow causes increases then can take place in the easy oxidation of powder when excessive.The blending ratio of composite material can be that soft magnetic metal, noncrystalline or ferrite are 10～95 weight %, preferably 40～90 weight %.Remainder is plastics or rubber.Soft magnetic metal, noncrystalline or ferritic content are during less than above-mentioned scope, can bring the low excessively drawback of permeability, when surpassing above-mentioned scope, soft magnetic metal, noncrystalline or ferrite are in direct contact with one another, and can have the defective that conductivity brings loss to increase because of core components 13 becomes.

On the other hand, on a face of the air core coil 12 that is inserted with core components 13, stacked with non magnetic and the conductive plate 14 of conductivity arranged.Conductive plate 14 is made up of copper or copper alloy or aluminum or aluminum alloy, is bonded on the face of the air core coil 12 that is inserted with core components 13.Conductive plate 14 places between air core coil 12 and the article 16, thus, air core coil 12 and article 16 is carried out electromagnetic shielding, and employed thickness of slab is 0.01～2mm.During the thickness of conductive plate 14 is not enough 0.01mm, can not expect to obtain producing effect, and when its thickness surpassed 2mm, the interval between article 16 and the air core coil 12 broadened as the former of electromagnetic shielding, air core coil 12 is given prominence to from article 16 significantly, and this is obviously also unreasonable.

The aerial coil 10 of Xing Chenging like this because core components 13 usefulness composite materials form, is compared with the core components that ferrite sintered body by fragility forms, and stronger toughness is arranged, and uses this core components 13, can guarantee the rigidity of aerial coil.In addition, because soft magnetic metal, noncrystalline or ferrite be dispersed in plastics or the rubber, and mutually insulated, so, do not have conductivity as the integral body of core components 13, even be subjected to the high frequency radio wave action, can not produce vortex flow yet.Therefore, even launch the higher frequency of radio wave frequency for number MHz～tens of MHz from transmitting antenna not shown in the figures, the thing of Q value also can not take place to reduce because of the generation of vortex flow.As a result, aerial coil 10 of the present invention has stronger toughness, and becomes the aerial coil 10 that can be used for upper frequency fully.

Particularly, in this embodiment, owing on a face of the air core coil 12 that inserts core components 13, be laminated with non magnetic and the conductive plate 14 of conductivity arranged, so, if air core coil 12 is installed on the article 16,, just can cut off air core coil 12 and article 16 by electromagnetism owing to be provided with this conductive plate 14 between the installed surface of article 16 and the air core coil 12 by this conductive plate 14, therefore, can prevent the variation of air core coil 12 autonomous induction coefficients and the reduction of Q value fully.Special under the situation that article are made up of strong magnetic material, effect is more obvious.Thus, when on the relative air core coil 12 of the installed surface that above-mentioned conductive plate 14 is bonded to the article of forming with strong magnetic material 16, the magnetic flux that will see through article 16 from the magnetic flux that core components 13 is sent, to become and see through the such magnetic flux of conductive plate 14 that high conductivity is arranged, and because this conductive plate 14 is non magnetic, so magnetic hysteresis loss is few, vortex flow takes place hardly, also because the article 16 that strong magnetic material is formed also can be subjected to the influence of air core coil 12 hardly.

In the above-described embodiments, though exemplified by forming core components 13 composite material injection molding forming or die forming or by rolling postforming,, also can be dry the composite material coating after formation core components 13.In this case, preferably composite material is coated on insulative resin film not shown in the figures or the sheet surface and makes its drying.Insulative resin when here, formation magnetic is coated with mould or the thickness of sheet material can be 10～200im, preferably 30～150im.In addition, the thickness of formed magnetic coating film can be 10～800im, preferably 30～300im.In addition, only the coating primary coating can not obtained under the situation of given thickness, can be by coating, dry same coating obtain filming of desired thickness repeatedly.If on the surface of such insulative resin film or sheet material, form the magnetic part that magnetic coating film constitutes, just can guarantee the intensity of magnetic part by insulative resin film or sheet material, simultaneously, can obtain the core components 13 of the following thickness of 0.8mm that aspect injection molding forming, is difficult to be shaped, and obtain thinner aerial coil 10.

Below, describe experimental example of the present invention in detail with comparative example.

＜experimental example 1 〉

At first, on an interarea of electrical insulating film, form air core coil.As electrical insulating film, used thickness 50im, length and width are respectively the polyimide film of 50mm.The Copper Foil that bonding stackedly thickness is 35im on an interarea of this polyimide film by these Copper Foils of etching, forms with reel 4 times air core coil of rectangle scroll at another interarea of polyimide film.Constitute of the width formation of the conductor of this air core coil with 0.8mm.The profile of the air core coil that is formed by this conductor is 18mm * 47mm.

Secondly, by the carboxyl iron powder of 92 weight % is mixed the resulting mixture injection molding forming in back with nylon resin, obtain the core components 13 of the composite material composition of thickness 0.87mm, profile 35mm * 52mm, then, on the electrical insulating film of air core coil central authorities, offer the hole of 35mm * 1mm, core components 13 to insert in this hole with the mode of the plane almost parallel of air core coil, is obtained aerial coil.Having by aerial coil, as experimental example 1 with the resulting core components of this composite material injection molding forming.

＜experimental example 2 〉

On the electrical insulating film identical with experimental example 1, the operation by same with experimental example 1 forms the same air core coil that the conductor identical with experimental example constitutes.In addition, preparation is other is weight ratio 70: 10: 20 noncrystalline thin slice, allyl resin and mixes resulting coating as the ethyl acetate of solvent.This applying coating is dried on whole an of interarea of the film that poly-para Toluic Acid's ethylene glycol fat of thickness 0.1mm forms, obtains the magnetic coating film that thickness is 0.1mm.The film that is formed with this magnetic coating film on interarea is cut into the size of 35mm * 60mm with this magnetic coating film, obtain the core components of forming by the dry magnetic film of composite material coating 13.Then, on the electrical insulating film of air core coil central authorities, offer the hole of 35mm * 1mm, core components 13 to insert in this hole with the mode of the plane almost parallel of air core coil, is obtained aerial coil.The aerial coil that has the core components of forming by this magnetic coating film as experimental example 2.

＜comparative example 1 〉

On the electrical insulating film identical,, form the identical air core coil that constitutes by the conductor identical with experimental example 1 by the order same with experimental example 1 with experimental example 1.In addition, also to prepare the core components that is laminated into 4 layers noncrystalline paper tinsel stacking material composition with the noncrystalline paper tinsel of thickness 20im, profile 10mm * 60mm.Then, on the electrical insulating film of air core coil central portion, offer the hole of 35mm * 1mm, core components 13 to insert in this hole with the mode of the plane almost parallel of air core coil, is obtained aerial coil.The aerial coil that has the magnetic part of forming by this noncrystalline paper tinsel stacking material as a comparative example 1.

＜comparative test 〉

In experimental example 1 and 2 and the air core coil both ends (X of Fig. 1 and Y) of the aerial coil of comparative example 1, be connected with the measurement binding post of the measuring appliance (4396 types that HEWIETT PACKARD company makes) that is used to measure coil characteristics, measure the L value and the Q value of the air core coil of given relatively frequency by this measuring appliance respectively.

In addition, as article, preparation 100mm * 100mm, thickness are the aluminium sheet of 0.16mm.Respectively the IC chip is connected on the air core coil of comparative example 1 and experimental example 1～3, utilizes this IC chip and aerial coil, as label with 13.56MHz work.Confirm respectively this tag configurations is had or not work when above-mentioned aluminium sheet surperficial.Such result is respectively shown in the table 1.

Table 1

	Experimental example 1		Experimental example 1		Experimental example 1
	Experimental example 1		Experimental example 1		Experimental example 1		Core components	Composite material		Magnetic coating film		The noncrystalline paper tinsel
Given frequency (MHz)	L (μH)	Q	L (μH)	Q	L (μH)	Q	Core components	Composite material		Magnetic coating film		The noncrystalline paper tinsel
Given frequency (MHz)	L (μH)	Q	L (μH)	Q	L (μH)	Q	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20	1.556 1.535 1.527 1.524 1.525 1.526 1.529 1.532 1.538 1.543 1.549 1.558 1.567 1.576 1.587 1.654	9.1 16.0 21.4 26.2 30.8 34.9 38.1 41.3 44.5 47.0 49.3 52.3 53.9 55.6 57.6 61.6	1.405 1.385 1.376 1.371 1.367 1.368 1.368 1.367 1.379 1.374 1.379 1.304 1.389 1.396 1.403 1.445	8.1 13.8 17.8 20.8 23.2 25.1 26.4 27.8 28.3 30.1 31.1 31.7 31.9 32.6 32.6 32.1	1.886 1.771 1.696 1.164 1.665 1.576 1.550 1.533 1.517 1.502 1.490 1.483 1.476 1.470 1.467 1.404	5.4 6.0 6.6 6.6 6.6 6.7 6.6 6.6 6.6 6.7 6.7 6.7 6.7 6.8 6.7 6.7
Have or not work	Work		Work		Work		1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20

Can judge from table 1, experimental example 1 and 2 is compared with comparative example 1, has improved the Q value.It seems that this is because in this comparative example 1, because core components is the noncrystalline paper tinsel, so in core components, can produce vortex flow, on the other hand, should be taken into account in experimental example 1 and 2, because core components is formed by composite material, so, can not produce vortex flow on the core components.In addition, the IC chip is connected to the label on the aerial coil of experimental example 1 and 2, even be configured on the surface of aluminium sheet, can works yet, in contrast to this, the label that the IC chip is connected on the aerial coil of comparative example 1 is not then worked.This also is to result from the having or not of above-mentioned vortex flow, the L value that therefore will consider aerial coil in comparative example 1 change, resonance frequency is in variation and absorb energy, cause the reason of loss.

Below, with reference to the description of drawings second embodiment of the present invention.

As Fig. 4 and shown in Figure 5, aerial coil 10 has: the insulating element 111 that is formed by electrical insulating film or electric insulation sheet material, by the sinuous electric conductor 112 that is formed on insulating element 111 surfaces of electric conducting material, and first core components 113 that is bonded in insulating element 111 back sides.Though being the film made by the plastics that electrical insulating property is arranged or sheet material or paper, insulating element 111 forms with oblong-shaped,, preferably plastic film or the plastic sheet by polyester or polyimides etc. forms.The formation of electric conductor 112 is to form with given pattern etching by means of the conductivity paper tinsel that will bond to insulating element 111 surfaces; Perhaps by conductivity paper tinsel or thin plate with given pattern stamping-out are bonded in the upward formation of insulating element 111 surfaces; Perhaps by means of with given pattern with conductive material silk screen printings such as Cu, Al, Zn or evaporation to the surface of insulating element 111 and form.

As shown in Figure 5, electric conductor 112 is on insulating element 111 surfaces, in its width side, separate given interval alternately be formed with along its long to past the road 112a of portion that extends with return the 112b of road portion, and have these are alternately linked together, make toward the 112a of road portion and the two ends of returning the 112b of road portion above-mentioned toward the 112a of road portion and return a plurality of connecting portion 112c that the 112b of road portion becomes serpentine.In addition, the surface of insulating element 111 is provided with couple of conductor 112d, 112d.The end of these leads 112d, 112d is respectively with the past road 112a of portion that is positioned at insulating element 111 Width two ends and return the 112b of road portion and be connected, the other end is provided with in the mutual mode near the substantial middle of insulating element 111 Widths, as IC chip or the capacitor 19 under the situation of label use, under the state that is electrically connected on couple of conductor 112d, the 112d other end respectively, be bonded on the surface of insulating element 111.

On the other hand, first core components 113 is bonded in the back side of insulating element 111, makes this first core components 113 and do not overlap, return the 112b of road portion but cover from the back side of insulating element 111 toward the 112a of road portion.As first core components 113, can form by soft magnetic metal, perhaps form with the powder of soft magnetic metal, noncrystalline or ferrite composition or the composite material of thin slice and plastics.In addition, as first core components 113, can also be the parts of the stacking material formation of the noncrystalline paper tinsel that waits by Fe based amorphous alloy (Unichem (U.S.) system METGLAS 2605S-2) or Co based amorphous alloy (the METGLAS 2712A of Unichem (U.S.) system), also can be to form rectangular ferrite.

As the plastics of composite material, perhaps use processability good thermoplastic plastics, perhaps use the good thermosetting plastics of thermal endurance.In addition, as above-mentioned soft magnetic metal powder, can use efflorescence powder, reduced iron powder of carboxyl iron powder, iron-permalloy etc. etc.On the other hand, as the soft magnetic metal thin slice, use above-mentioned powder with miniaturizations such as ball mills, with after the powder forming, these powder are carried out the resulting thin slice of mechanical flattening; Perhaps use the molten metal particles and the water-cooled copper of iron system or cobalt based amorphous alloy are collided resulting thin slice.

Under the situation that first core components 113 is formed by composite material, can be by composite material injection molding forming or die forming be formed first core components 113.First core components 113 of Xing Chenging is like this compared with the core components that ferrite by fragility forms, because stronger toughness is arranged, even very thin, also is not easy fragmentation.In addition, because powder or thin slice that soft magnetic metal, noncrystalline or ferrite are formed are dispersed in the plastics, by means of the plastics mutually insulated, so whole do not have conductivity and be subjected to first core components 113 that vortex flow can not take place the high frequency radio wave action yet even can obtain.Therefore, preferably as far as possible unfertile land form and to account for most first core components 113 of aerial coil 10 thickness directions as thin as a wafer.Specifically, under the situation of first core components 113 of using sheet, the sheet thickness that constitutes first core components 113 is 0.01～1mm, preferably 0.05～1mm.If when forming very thinly, then can constitute first core components 113 to adjust its thickness to sheet material by stacked a plurality of sheet materials.

First core components 113 among Fig. 4 and Fig. 5 is to use with the parts of square configuration with the sheet of composite material injection molding forming, simultaneously this first core components 113 is bonded in the back side of electrical insulating film 111.First core components 113 is bonded on the electric insulation part 111, is adhesive stripe-coating on any one or both sides of first core components 113 and electrical insulating film 111, afterwards first core components 113 be pressed to carry out on the electric insulation part 111 bonding.At this moment, first core components 113 is bonded in the back side of insulating element 111, makes this first core components 113 and do not overlap, return the 112b of road portion but cover from the back side of insulating element 111 toward the 112a of road portion.

In this embodiment, as shown in Figure 4, sheet or tabular conductive component 116 are adhered to the back side of insulating element 111 stackedly, cover first core components 113.Conductive component 116 is made up of conductive materials such as copper or aluminium, has under the situation of conductivity in first core components 113, and the conductive component 116 and first core components 113 are asked by dielectric film bonding stackedly mutually.The thickness of conductive component 116 is 0.01～5mm preferably.By being the thickness setting of conductive component 116 0.01～5mm, separate conductive component 116 and electric conductor 112, can improve the Q value of electric conductor 112 and improvement performance as aerial coil 10.Its resistance is preferably in 5 when conductive component 116 wide 1cm, long 1cm

Below.

The aerial coil 10 of Gou Chenging like this, its thickness forms as thin as a wafer.Because it is very thin, even this aerial coil 10 is installed on the article 18, aerial coil 10 also hardly can be outstanding from article 18.In addition,, see through first core components 113, depict the loop shown in Fig. 4 solid arrow as by the magnetic flux that electric current produced that flows through electric conductor 112 owing to the back side that first core components 113 is bonded in insulating element 111.In addition, because first core components 113 is bonded in the back side of insulating element 111, make this first core components 113 and do not overlap toward the 112a of road portion, but return the 112b of road portion from the inside covering of insulating element 111, therefore shown in Fig. 4 enlarged drawing dotted arrow, see through the magnetic flux of first core components 113, the part of its end spreads and passes the top of the past 112a of road portion, returns first core components 113 of adjacency once more.

So even this label is installed to the surface of article 18 with aerial coil 10, but its flow direction is shown in Fig. 4 arrow, surperficial parallel with article 18 is seldom by article 18.Therefore, even article 18 are made of metal, can suppress the vortex flow of generation on the article 18, and the resonance frequency of aerial coil 10 can not be subjected to the influence of above-mentioned metal, and this aerial coil 10 can be worked reliably yet.Particularly in this embodiment, because conductive component 116 is bonded in insulating element 111 back sides in the mode that covers first core components 113 stackedly, so between first core components 113 and article 18, have this conductive component 16.Thus, by first core components 113 and from the diffusion of its end again by toward the magnetic flux of the 112a of road portion top increasing, aerial coil 10 can be worked more reliably.

In addition, in the above-described embodiments, although understand first core components of forming by soft magnetic material, composite material, soft magnetic metal plate or paper tinsel, noncrystalline paper tinsel or its stacking material or ferrite 113, but, the magnetic coating film that first core components 113 also can have insulative resin film not shown in the figures or sheet material and form on the surface of this insulative resin film or sheet material.In this case, the insulative resin when formation magnetic is coated with mould or the thickness of sheet material are 10～100im, preferably 20～40im.The core components that magnetic coating film constituted that on the surface of this insulative resin film or sheet material, forms, by the applying coating that contains powder that magnetic material forms or thin slice on insulative resin film or sheet surface and make it dry and make, can obtain first magnetic part 113 of the following thickness of 0.8mm that aspect injection molding forming, is difficult to be shaped like this, thereby obtain thinner aerial coil 10.

Show bright third embodiment of the invention by Fig. 6 and Fig. 7 below.Symbolic representation same parts identical with above-mentioned form of implementation among the figure, its repeat specification is omitted.

In this embodiment, on the surface of insulating element 111, be bonded with second core components 114, make this second core components 114 not overlap but cover toward the 112a of road portion, and the end of first core components 113 of end and adjacency be overlapping with returning the 112b of road portion.Second core components 114 among this embodiment is formed by magnetic coating film, and this magnetic coating film forms by the applying coating drying powder that contains the magnetic material composition or thin slice.That is to say, will contain the powder that magnetic material forms or the coating of thin slice,, be coated in the surface of insulating element 111, carry out drying afterwards, form the magnetic coating film of formation second core components 114 not overlap but covers mode toward the 112a of road portion with returning the 112b of road portion.

Here, as the powder that contains magnetic material, the efflorescence powder of use carboxyl iron powder, iron-permalloy etc., reduced iron powder etc.On the other hand, as the thin slice of magnetic material, use with miniaturizations such as ball mills, makes above-mentioned powder after the powder forming, and these powder are carried out the resulting thin slice of mechanical flattening; Perhaps use iron system or cobalt based amorphous alloy molten metal particles and water-cooled copper are collided resulting thin slice.The thickness of formed magnetic coating film is 10～800im, preferably 30～300im.In addition, only the coating primary coating can not obtained under the situation of given thickness, can be by coating, dry same coating obtain filming of desired thickness repeatedly.Second core components 114 that this magnetic coating film is formed only by applying coatings and make it dry simple operation, just can obtain second core components 114 that approaches.

The aerial coil 10 of Gou Chenging like this, because second core components 114 forms by magnetic coating film, thus can obtain second magnetic part 114 of the following thickness of 0.8mm of difficult shaping aspect injection molding forming, and can make its thickness thinner.Because second core components 114 is bonded on the insulating element 111, it is covered toward the 112a of road portion and its end overlaps with the end of adjacency first core components 113, so the magnetic flux that passes through first core components 113 is according to the mode shown in Fig. 6 solid arrow, end in first core components 113, transfer on second core components 114, by behind the 112a of road portion top, transfer to the end of first core components 113 of adjacency once more from the end of second core components 114.Thus, second core components 114 is the face side that directs into insulating element 111 by the magnetic flux of first core components 113 at past road portion 112a place, magnetic flux is alternately moved, simultaneously by this first and second core components 113,114 through first and second core components 113,114.Therefore, toward the 112a of road portion with return the surface and the back side that the 112b of road portion alternately is in magnetic flux, comprise this toward the 112a of road portion and a series of electric conductors 112 that return the 112b of road portion with to be wound on this magnetic flux aerial coil on every side identical.Therefore, can obtain aerial coil 10 with comparalive ease, this aerial coil 10 have with Wire-wound on the outer peripheral face of core components, make the identical characteristic of aerial coil in the past of first conductor, compare with the aerial coil in the past of middle coiling copper cash, can improve mass productivity.

Show bright fourth embodiment of the invention by Fig. 8 and Fig. 9 again.Among the figure, the symbolic representation same parts identical with above-mentioned form of implementation, its repeat specification is omitted.

In this embodiment, electric conductor 112 has 2 leads 21,22, and these 2 leads 21,22 are formed on the surface of insulating element 111 along mutual given interval respectively sinuously.Alternately be formed with respectively on 2 leads 21,22 toward the 21a of road portion, 22a and return the 21b of road portion, 21b, each is toward the 21a of road portion, 22a and return the 21b of road portion, 22b and alternately link together by means of a plurality of connecting portion 21c, 22c.In addition, the two ends at these 2 leads 21,22 are respectively arranged with leading

part

21d, 22d, and the leading part 21d of lead 21 terminal parts is connected with leading part 22d in abutting connection with another lead 111 top portions, constitutes a series of electric conductor 112.

Then, first core components 113 is bonded in the back side of insulating element 111, this first core components 113 and the past 21a of road portion, 22a is not overlapped, and return the 21b of road portion, 22b from the back side covering of insulating element 111.Second core components 114 is bonded on the surface of insulating element 11, make second core components 114 not overlap and cover toward the 21a of road portion, 22a with returning the 21b of road portion, 22b, and its end overlaps with the end of first core components 113 of adjacency.

The aerial coil 10 of Gou Chenging like this, because electric conductor 112 is made of 2 leads 21,22, so, compare with the situation that constitutes electric conductor by solid conductor, the radical that alternately is in the past road 21a of portion, the 22a at the surface of the magnetic flux by first and second core components 113,114 and the back side and returns the 21b of road portion, 22b increases to some extent, therefore, the number of turns of so-called coiling is increased, can improve the performance of aerial coil by the number of turns that increases this coiling.

In addition, in the foregoing description 3 although understand the situation that constitutes electric conductor 112 by 2 leads 21,22, but, electric conductor 112 also can be as shown in Figure 10, being made of 3 leads 31,32,33, can also be to be made of 4,5,6 not shown in the figures, lead more than 7 or 9.When number of lead wires increased, the number of turns of so-called coiling increased, and by means of the number of turns that increases this coiling, can further improve the performance of aerial coil.

Also have, in the above-described embodiments, although understand by first core components 113 that the composite material injection molding forming is obtained second core components 114 with the magnetic coating film composition, but, first core components is made of magnetic coating film, the plate of composite material, soft magnetic metal of powder that second magnetic part is made up of soft magnetic metal, noncrystalline or ferrite or thin slice and plastics or paper tinsel, noncrystalline paper tinsel or its stacking material or ferrite are constituted.

＜experimental example 3 〉

On Fig. 4 and the insulating element of forming by electrical insulating film 111 surfaces shown in Figure 5, form electric conductor 112.As electrical insulating film, used thickness 50im, length and width are the polyimide film of 65mm * 55mm.The Copper Foil of bonding stackedly thickness 35im on an interarea of this polyimide film, by these Copper Foils of etching, another interarea at polyimide film forms sinuously, be respectively the past road 112a of portion of 40mm and return the 112b of road portion with 3 gap formation length that alternately separate 10mm mutually, form a series of electric conductor 112 thus.This electric conductor 112 forms with width 0.8mm.

Afterwards, at the back side of the electrical insulating film 112 that is provided with electric conductor 112, bonding thickness 1mm, length and width are first core components 113 of 40mm * 20mm.As this first core components 113, the composite material that is to use in nylon resin carboxyl iron powder to account for 92 weight % carries out the resulting parts of injection molding forming.First core components 113 bonding is so that first core components 113 is carried out with not overlapping toward the 112a of road portion and cover the mode of returning the 112b of road portion from the back side of insulating element 111.

Then, the conductive component 116 that the aluminium sheet of thickness 0.1mm, length and width 70mm * 60mm is formed bonds to covering insulating element 111 the insides, to cover first core components 113.Like this, be as experimental example 3 with the aerial coil that has only first core components 113.

＜experimental example 4 〉

Make the aerial coil that have only first core components 113 identical with experimental example 3.Then, utilize the composite material same with experimental example 1, first core components of preparation and experimental example 1 is with second core components 114 of shape with size.This second core components 114 is bonded in the surface of insulating element 111, so that second core components 114 with return the 112b of road portion and do not overlap, and cover the past 112a of road portion and its end is overlapped with the end of first core components 113 of adjacency, obtain the aerial coil of Figure 6 and Figure 7.To have the first such core components 113 and both aerial coils of second core components 114 as experimental example 4.

＜comparative example 2 〉

As shown in figure 24, be used as formation coil body 2 on the single electrical insulating film of substrate 1.As electrical insulating film 1, used thickness 50im, length and width are respectively the polyimide film of 50mm.The Copper Foil of bonding stackedly thickness 35im on the surface of this polyimide film 1 forms conductor by these Copper Foils of etching, at another interarea of polyimide film, and formation forms this conductor with scroll coiling 4 circles coil body 2.Conductor is that 0.8mm forms with the width.The profile of the coil body 2 that is formed by this conductor is 45mm * 45mm.Form the square shape of 37mm * 37mm by the central portion of these coil body 2 encirclements.Then, thickness 0.1mm, length and width are respectively the back side that conductive component not shown in the figures that the aluminium sheet of 70mm * 60mm forms is bonded in the substrate 1 that electrical insulating film forms.The aerial coil of the coil body 2 that is formed with scroll on the substrate of forming at this electrical insulating film 1 as a comparative example 2.

＜comparative test 〉

As article, prepare the acrylic panel of 100mm * 100mm, thickness 0.116mm respectively, and with the same shape of this acrylic panel, with big or small aluminium sheet and low carbon steel plate.On the surface of these acrylic panels, aluminium sheet and low carbon steel plate, dispose the aerial coil of above-mentioned experimental example 3,4 and comparative example 2 respectively.Then, when the configuration of these antenna coil, the configuration conductive component makes it directly contact with these article.Then, both ends (X of Fig. 5 and Y) at the electric conductor 112 of these antenna coil, connection is used to measure the measurement binding post of the measuring appliance (HEWIETT PACKARD company makes 4395) of coil characteristics, is measured the L value and the Q value of the coil body of given relatively frequency respectively by this measuring appliance.

In addition, respectively capacitor 116 is connected on the aerial coil of comparative example 2 and experimental example 3, obtains the eas tag of under 8.2MHz, working.Affirmation is configured in this label respectively under the lip-deep situation of above-mentioned acrylic panel, aluminium sheet and low carbon steel plate and has or not work.These results show bright in table 2 respectively.

Table 2

	Article	Acrylic panel	Aluminium sheet	Low carbon steel plate
	Article	Acrylic panel	Aluminium sheet	Low carbon steel plate	Experimental example 3	L(μH)	2.186	2.142	2.23
Q	80.7	79.5	78.2			L(μH)	2.186	2.142	2.23
Q	80.7	79.5	78.2	Have or not work		Work	Work	Work
Experimental example 4	L(μH)	2.662	2.635	Have or not work		Work	Work	Work	2.71
	L(μH)	2.662	2.635	Q	76.5	74.8	73.5		2.71
	Have or not work	Work	Work	Q	76.5	74.8	73.5	Work
	Have or not work	Work	Work	Comparative example 2	L(μH)	2.218	1.025	Work	2.345
Q	100.3	50.8	12.1		L(μH)	2.218	1.025		2.345
Q	100.3	50.8	12.1		Have or not work	Work	Do not work	Do not work

As can be seen from Table 2, in experimental example 3 and experimental example 4, any one L value under the situation of acrylic panel, aluminium sheet and low carbon steel plate does not change substantially, compares with the situation of acrylic panel, under the situation of using aluminium sheet and low carbon steel plate, the reduction of Q value also seldom.But in comparative example 2, with the situation comparison of acrylic panel, under the situation of aluminium sheet, the L value has significant change.In addition, under the situation of low carbon steel plate, the Q value also descends significantly.It seems that this situation is caused by following reason, promptly in experimental example 3 and experimental example 4, parallel with the plate face from the direction of the magnetic flux that coil produced, by comparison, in comparative example, the direction of magnetic flux is vertical with the plate face, even be bonded with conductive component, the major part of magnetic flux also can arrive the plate place.In addition, the IC chip is connected the label on the aerial coil of experimental example 3 and experimental example 4, even be configured on any one surface on acrylic panel, aluminium sheet and the low carbon steel plate, also can work, by comparison, the IC chip is connected to the label on the aerial coil of comparative example 2, just works in the time of only on being disposed at the surface of acrylic panel, do not work and be disposed under the lip-deep situation of aluminium sheet and low carbon steel plate.It is believed that this situation is caused by following reason, promptly under the situation of aluminium sheet, the L value is changing, and resonance frequency changes, and energy causes loss by the iron plate absorption.

Below, the fifth embodiment of the present invention is described with reference to the accompanying drawings.

As Figure 11 and shown in Figure 12, label of the present invention has with aerial coil 10: the coil body 211a that forms of the conductor 211 of reeling planar with scroll, and be bonded in tabular or sheet core components 213 on face of this coil body 11a.Coil body 211a in this form of implementation uses electrically insulating film or the sheet material 212 that gathers para Toluic Acid's glycol ester (PET) or polyimides composition by means of forming on the interarea that conductor 211 is wound on electrical insulating film or sheet material 212 with scroll as electrical insulating film or sheet material 212.The formation of conductor 211, be by means of the conductivity paper tinsel that is bonded on the interarea of electrical insulating film or sheet material 212 is formed with given pattern etching or stamping-out, perhaps by means of on an interarea of electrical insulating film or sheet material 212, electric conducting material being carried out silk screen printing or evaporation with given pattern and forming.

Below, the operation that forms conductor 211 on the film 212 by being etched in is described.At first, preparation sticks on Copper Foil the parts on whole an of interarea of this film 212.By means of silk screen print method anti-etching coating is printed onto on this Copper Foil.The printing of the anti-etching coating of Copper Foil, owing to the coil body 211a that is a series of conductors 211 formations of formation is necessary, so, be applied as rectangle or circular scroll from the center.Afterwards, dry this anti-etching coating, and the Copper Foil that does not apply anti-etching coating removed by etching, allow the Copper Foil that is coated with anti-etching coating partly remain on the interarea of film.At last, by this anti-etching coating is removed from this Copper Foil, form and remain in conductor 211 on 212 1 interareas of film, that form by Copper Foil.Here, because the anti-etching coating of an interarea of the film 212 of Figure 11 and Figure 12 is that the scroll with circle applies from the center, so the conductor 211 that is formed on the interarea of film 212 has from the center with the formed coil body 211a of circular scroll.Can be formed on the conductor 211 that produces by this etching on the interarea of electrical insulating film 212 or electric insulation sheet material easily and at an easy rate.

On the other hand, core components 213 can be formed by the soft magnetic metal of tabular or sheet, and perhaps the powder of being made up of soft magnetic metal, noncrystalline or ferrite or the composite material of thin slice and plastics form.In addition, core components 213 can also be by means of the noncrystalline paper tinsel of Fe based amorphous alloy (the METGLAS 2605S-2 of Unichem (U.S.) system) or Co based amorphous alloy (the METGLAS 2712A of Unichem (U.S.) system) etc. or the parts of its stacking material formation, can also be the ferrite that forms tabular or sheet.

As for the used plastics of this composite material, since identical with first embodiment, so omit its explanation.

Core components 213 among Figure 11 and Figure 12 is used the parts with the oval sheet material shape of composite material injection molding forming, and this core components 213 is bonded on another interarea of electrical insulating film 212.This core components 213 bonding on another interarea of electrical insulating film 212, be in any one of core components 213 and electrical insulating film 212 or adhesive stripe-coating on both, afterwards core components 213 is layered on another interarea of electrical insulating film 212, carries out bonding thus.This bonding stackedly, be to carry out in the mode of the part of core components 213 crosscut coil body 211a, and carry out bonding in the following manner: make an end 213a of core components 213 be positioned at the central portion 211b that is surrounded by coil body 211a, the other end 213b of core components 213 is positioned at the outside of coil body 211a.

As shown in figure 11, the aerial coil 10 of this embodiment, sheet or tabular conductive component 216 are bonded on the face of coil body 211a.Specifically, conductive component 216 is bonded in the mode of the core components 213 on another interarea of electrical insulating film or sheet material 212 with covering, be bonded on another interarea of electrical insulating film or sheet material 212.Conductive component 216 is made up of conductive materials such as copper or aluminium, has in core components 313 under the situation of conductivity, and is bonding stackedly by dielectric film each other.The thickness of conductive component 216 is 0.01mm～5mm preferably.By being the thickness setting of conductive component 216 0.01～5mm, the Q value of the coil body 211a that is formed by conductor 211 and the raising performance as aerial coil 10 can be improved in the interval of conductive component 216 and conductor 211 separately.And the resistance of conductive component 216 when width 1cm, length 1cm is preferably in 5 Below.

The aerial coil 10 of Gou Chenging can form with thickness as thin as a wafer like this.Because it is very thin, even this aerial coil 10 is installed on the article 18, aerial coil 10 also hardly can be outstanding from article 18.In addition, because the part of core components 213 crosscut coil body 211a, and be layered on the face of coil body 211a, so, the magnetic flux that electric current produced by flowing through the coil body 211a that is formed by conductor 211 is by core components 213, retouches out loop shown in Figure 11 solid arrow by the magnetic flux of this core components 213.Therefore, even this label is installed to the surface of article 18 with aerial coil 10, its flow direction surperficial parallel with article 18 shown in Figure 11 arrow, even article 18 are made of metal, also can suppress to produce vortex flow on the article 18, and the resonance frequency of aerial coil 10 can not be subjected to the influence that above-mentioned metal is made article, and aerial coil 10 can be worked reliably.

Particularly, in this embodiment, owing to will be bonded in the interarea conductivity paper tinsel on the whole of electrical insulating film 212 by given pattern etch, form coil body 211a, so, only need IC chip not shown in the figures or resonance to be connected on the coil body 211a, just can easily make RFID with label or EAS label with this electrical insulating film 212 of capacitor mounting.As for the RFID label that the IC chip is connected on the aerial coil 10, when so that the mode of core components 216 between article 18 and coil body 211a, when being installed to aerial coil 10 on the article 18, flow through the magnetic flux that electric current produced of coil body 211a, just mainly by this core components 213, the amount by article 18 just reduces.In addition, in this embodiment, owing on another interarea with bonding stackedly electrical insulating film of conductive component 216 or sheet material 212, cover core components 213, so conductive component 216 radio wave shield are passed through article.Thereby, no matter whether article 18 are made of metal, aerial coil 10 all seldom is subjected to its influence, even the surface of article is made of metal, the loss that the vortex flow that produced by this metal surface etc. causes can not take place yet, even be installed on the part that the metal of article 18 forms, RFID also can work reliably with label.

This aerial coil 10, owing to be on an interarea of electrical insulating film or sheet material 212, to form coil body 211a by a series of conductors 211, so install easily, only need simultaneously by the simple operation on another interarea that core components 213 is bonded to electrical insulating film or sheet material 212 stackedly, just can obtain aerial coil 10, the outer peripheral face coiling lead of this core components that coexists, the aerial coil in the past of making conductor are compared, and can improve mass productivity.

In addition, in the above-described embodiments, though the core components of forming by the plate of soft magnetic metal, composite material, soft magnetic metal or paper tinsel, noncrystalline paper tinsel or its stacking material or ferrite 213 that illustrates, but, the magnetic coating film that core components 213 also can have insulative resin film not shown in the figures or sheet material and form on the surface of this insulative resin film or sheet material.In this case, the insulative resin when formation magnetic is coated with mould or the thickness of sheet material are 10～100im, preferably 20～40im.The core components of the magnetic coating film composition that forms is gone up on this insulative resin film or sheet material and surface thereof, be by on insulative resin film or sheet surface, the applying coating drying of powder that contains the magnetic material composition or thin slice is made, so can obtain the magnetic part 213 of the difficult following thickness of 0.8mm that is shaped aspect injection molding forming, obtain thinner aerial coil 10.

Below by showing bright sixth embodiment of the invention among Figure 13 and Figure 14.Among the figure, the symbolic representation same parts identical with above-mentioned form of implementation, its repeat specification is omitted.

In this embodiment, the coil body 211a that reels with the rectangle scroll is formed on 212 1 interareas of insulative resin film by means of conductor 11.The conductor 211 of this embodiment, be by means of with the rectangle scroll with conductive materials such as Cu, Al, Zn through silk screen printing or evaporation to 212 1 interareas of insulative resin film and form.Conductor 211 is formed on 212 1 interareas of insulative resin film can carries out relatively large production more at an easy rate by printing or evaporation.

The mode of the coating of powder that contains the magnetic material composition or thin slice with a crosscut coil body 211a part is coated on another interarea of electric insulation part 212.The coating of this coating is carried out in the following manner, promptly allows an end 213a be positioned at the central portion 211b that is surrounded by coil body 211a, and other end 213b is positioned at coil body 211a outside, afterwards, by drying, forms the magnetic coating film that constitutes core components 213.The core components of being made up of magnetic coating 213 of Xing Chenging is layered on another interarea of film or sheet material 212 like this.

Here, as the powder that is included in the magnetic material in the coating, the efflorescence powder of use carboxyl iron powder, iron-permalloy etc., reduced iron powder etc.On the other hand, as the thin slice of magnetic material, be to use above-mentioned powder with miniaturizations such as ball mills, make after the powder forming, with these powder resulting thin slice of flattening mechanically; Perhaps use the molten metal particles and the water-cooled copper of iron system or cobalt based amorphous alloy are collided resulting thin slice.The thickness of the magnetic coating film that forms is 10～800im, preferably 30～300im.In addition, only the coating primary coating can not obtained under the situation of given thickness, can be by coating, dry same coating obtain filming of desired thickness repeatedly.This magnetic coating film has the function as core components 213, only needs the simple operation by the coating dry paint, just can obtain having the label aerial coil 10 of the core components of being made up of magnetic coating 213.

The aerial coil 10 of Gou Chenging like this owing to have the core components of forming by magnetic coating film 213, so can obtain the core components 213 of the following thickness of 0.8mm of difficult shaping aspect injection molding forming, but and its thickness thinner.Thereby, can obtain flow direction parallel with article surface, hardly can be from the outstanding aerial coil 10 of article.In addition, the magnetic coating film that forms on electrical insulating film 212 or the sheet material forms because core components 213 is by being coated in, so can omit the operation of the core components 213 of bonding the foregoing description, just aerial coil 10 can be obtained with simpler operation, thereby the mass productivity of aerial coil 10 can be further improved.Also owing to form magnetic coating film by the coating dry paint, so in this coating, contain under the situation of the thin slice of forming by magnetic material, if the surface of this thin slice and electrical insulating film 212 or sheet material is disposed abreast, then can improve the performance of core components 213.

In addition, in the above-described embodiments, though be conductor is wound on 212 1 interareas of electrical insulating film with scroll and forms coil body,, as long as conductor planar can be kept the state that is wound into scroll, coil body might not be leaveed no choice but be formed on the electrical insulating film.Specifically, can also planar be wound into scroll or the conductivity sheet material of aluminium or copper coin etc. is carried out stamping-out processing, constitute coil body by the conductor of planar reeling with scroll by means of the lead that the surface is covered by insulating barrier.

＜comparative example 3 〉

Make the aerial coil that on interarea of electrical insulating film, forms coil body by means of conductor.As electrical insulating film, used thickness 50im, length and width are respectively the polyimide film of 50mm.The Copper Foil of bonding stackedly thickness 35im on an interarea of this polyimide film by these Copper Foils of etching, on an interarea of polyimide film, by means of a series of conductors, forms the coil body with rectangle scroll coiling 4 circles.Conductor is that 0.8mm forms with the width.The profile of the coil body that is formed by this conductor forms 18mm * 47mm.Aerial coil on this electrical insulating film, that only be made of a conductor as a comparative example 3 will be arranged on.

＜experimental example 5 〉

With comparative example 3 same electrical dielectric films on, by the operation same, form by the identical coil body that constitutes with comparative example 1 same conductor with comparative example 1.Prepare the other ink that contains magnetic flakes, dry on another interarea of electrical insulating film this ink coating, on another interarea of the electrical insulating film of a face of coil body, form core components, make an end of this core components be positioned at the central portion that surrounds by coil body, and the part of crosscut coil body makes the other end of this core components be positioned at the outside of coil body.Face of such coil body is provided with the aerial coil of the core components of being made up of magnetic coating film as experimental example 5.

＜experimental example 6 〉

On the electrical insulating film identical,, form the identical coil body that constitutes by the conductor identical with comparative example 3 by the operation same with comparative example 3 with comparative example 3.In addition, prepare other core components, this core components is laminated into 4 layers noncrystalline paper tinsel stacking material by the noncrystalline paper tinsel with thickness 20im, profile 10mm * 60mm and forms.This core components is bonded on another interarea of dielectric film, a face that obtains coil body is provided with the aerial coil of core components.The bonding of core components undertaken by following manner, that is, allow an end of this core components be positioned at the central portion that is surrounded by coil body, and a crosscut coil body part, allows its other end be positioned at the outside of coil body.A face of coil body in this wise is provided with the aerial coil of the core components of being made up of noncrystalline paper tinsel stacking material as experimental example 6.

＜experimental example 7 〉

With comparative example 3 same electrical dielectric films on, by the operation same, form by the identical coil body that constitutes with comparative example 3 same conductor with comparative example 3.In addition, prepare the core components of the composite material composition of other thickness 0.87mm, profile 35mm * 52mm.This composite material is made up of granular iron powder and plastics as soft magnetic metal, and the core components that this composite material is formed is bonded on another interarea of electrical insulating film, obtains the aerial coil that face of coil body is provided with core components.The bonding of core components undertaken by following manner, that is, make an end of core components be positioned at the central portion that is surrounded by coil body, and the part of crosscut coil body, makes its other end be positioned at the outside of coil body.A face of coil body in this wise is provided with the aerial coil of the core components of being made up of composite material as experimental example 7.

＜comparative test 〉

Conductor both ends (X of Figure 14 and Y) in the coil body of the aerial coil that forms comparative example 3 and experimental example 5～7, be connected with the measurement binding post of the measuring appliance (HEWIETTPACKARD company makes 4395) that is used to measure coil characteristics, measure the L value and the Q value of the coil body of given relatively frequency by this measuring appliance respectively.

As article, the aluminium sheet of preparation 100mm * 100mm, thickness 0.16mm.On the conductor both ends (X of Figure 14 and Y) of the coil body that forms comparative example 3 and experimental example 5～7, connect the IC chip respectively, as the label of under 213.56MHz, working by this IC chip and aerial coil.Affirmation is configured in this label respectively under the situation on the above-mentioned surface of aluminum plate and has or not work.These results are illustrated respectively in the table 3.

Table 3

	Experimental example 5		Experimental example 6		Experimental example 7		Comparative example 3
	Experimental example 5		Experimental example 6		Experimental example 7		Comparative example 3		Core components	Magnetic coating film		Noncrystalline		Composite material		Do not have
Given frequency (MHz)	L (μH)	Q	L (μH)	Q	L (μH)	Q	L (μH)	Q	Core components	Magnetic coating film		Noncrystalline		Composite material		Do not have
Given frequency (MHz)	L (μH)	Q	L (μH)	Q	L (μH)	Q	L (μH)	Q	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20	1.315 1.296 1.287 1.285 1.286 1.286 1.287 1.290 1.292 1.295 1.299 1.305 1.313 1.316 1.322 1.361	7.8 13.6 18.9 23.3 27.4 31.3 34.5 37.3 40.6 43.0 45.2 47.0 48.4 50.3 51.3 53.7	1.395 1.357 1.343 1.335 1.331 1.328 1.326 1.325 1.325 1.325 1.326 1.330 1.333 1.336 1.403 1.369	7.6 11.6 14.4 16.0 17.3 18.1 18.9 18.6 19.2 19.3 19.4 19.4 19.4 19.4 19.3 18.8	1.372 1.351 1.344 1.340 1.340 1.340 1.341 1.343 1.346 1.348 1.352 1.358 1.363 1.390 1.376 1.415	8.1 14.5 19.7 24.2 28.6 32.6 36.2 39.1 42.7 45.1 47.9 50.6 52.3 55.3 57.1 64.7	0.680 0.667 0.662 0.660 0.659 0.659 0.659 0.660 0.660 0.661 0.663 0.665 0.668 0.673 0.683 0.691	2.0 3.3 4.4 5.2 6.0 6.6 7.2 7.5 8.0 8.4 8.7 9.0 9.2 9.5 9.6 10.1
Have or not work	Work		Work		Work		Do not work		1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20

Can judge from table 3, in experimental example 5～7, compare with comparative example 3, the Q value has improved.It seems that this situation be because having or not of core components causes.In addition, the IC chip is connected to the label on the aerial coil of experimental example 5～7, even be configured on the surface of aluminium sheet, also can works, in contrast to this, the label that the IC chip is connected on the aerial coil of comparative example 3 but can not be worked.Can think this situation owing to following reason causes, that is, in the aerial coil of experimental example 5～7, the direction of the magnetic flux that produces from coil is parallel with the plate face, can suppress the generation by the vortex flow that the surface produced of this magnetic flux arrival aluminium sheet.On the other hand, it seems be because: in comparative example 3, flow direction is vertical with the plate face, and the major part of magnetic flux arrives the aluminium sheet place, causes the L value variation of aerial coil, and resonance frequency changes, and iron plate absorption energy, causes loss.

Below, the seventh embodiment of the present invention is described with reference to the accompanying drawings.

As Figure 15 and shown in Figure 16, as the label 12 that the RFID of transponder uses, be the lip-deep element that is installed to article 311, this label 12 has: the IC chip 313 of storing the different intrinsic information of each article 311; And be electrically connected to transponder on the IC chip 313 with antenna 314.The article 311 of this embodiment are, the material that the part of transponder is made of metal is installed forms.Antenna 314 of the present invention comprises: be installed to the conductive component 314a on these article 11 by conductive material with tabular formation, the inside; And the lip-deep coil body 314b that is wound on this conductive component 314a by insulating element 316 with scroll.

As conductive component 314a, for example can be sheet material or the plate or the paper tinsel of the conductive material composition of copper or aluminium etc., be the conductor that connects the two ends of scroll.Shown in the enlarged drawing of Figure 16, insulating element 316 can be non-conductive sheet material, plate or paper tinsels etc. such as polyethylene or poly-para Toluic Acid's glycol ester.In addition, as long as conductive component 314a has conductivity, can be with the dry conductive coating of conductivity ink coating at insulating element 316 back sides.As electrically-conducting paint, can be particle or the thin slice that argentiferous or graphite are formed.In addition, conductive component 314a can also be electrically conductive, electrically coating or the vapor-deposited film that is layered in insulating element 316 the insides.Use by film, under the situation of conductive component 314a that electrodeposited coating or evaporation layer are formed, the thickness of insulating element 316 is 0.01mm～5mm preferably.By being the thickness setting of insulating element 316 0.01～5mm, the Q value of coil body 314b and the raising performance as aerial coil 10 can be improved in the interval of insulating element 316 and coil body 314b separately.Have again, when the width of conductive component 314a is 1cm, resistance was preferably in 5 when length was 1cm

Below.

Spiral coil body 314b uses employed in the past parts.That is to say, coil body 314b, for example be to reel by the copper cash that will be covered to make, perhaps remove unwanted part with etching method or blanking method etc., form scroll and make being layered in as conductive layers such as aluminium foil on the insulated plastic sheet material of insulating element 316 or Copper Foils.By means of being formed under the situation that filming on insulating element 316 back sides, electrically conductive, electrically coating or evaporation layer constitute conductive component 314a, can directly be layered in paper tinsels such as aluminium foil or Copper Foil the surface of insulating element 316, remove unwanted part for this aluminium foil or Copper Foil etc. with etching method, directly form scroll coil body 314b in its surface.This coil body 314b under in the mode of guaranteeing given characteristic, forms through adjusting the number of turns or scrollwork diameter under the state that is wound in conductive component 314a surface.In addition, the IC chip 313 of present embodiment is under the state that is connected in coil body 314b two ends, directly bonds on the conductive component 314a.

The transponder usefulness antenna 314 that constitutes like this, usually its characteristic value changes when adhering to coil body 14b on the conductive component 314a, but, because coil body 314b is under the lip-deep state that is wound in conductive component 314a with scroll, can adjust in the mode of guaranteeing set-point, so can activate label 12 reliably by means of the radio wave of the given frequency of transceiver antenna transmission of the interrogator not shown in the figures from this antenna 314.As for this antenna 314, because the actual coil body 314b that accepts the radio wave of given frequency has been wound on the surface of conductive component 314a, so can guarantee given particular value, even this antenna 314 directly is installed on the article of metal composition, the particular value of coil body 314b can not have significant change yet.As a result, necessary space when antenna 314 was installed on the metal in the past need not arranged, eliminate label 12 remarkable distinct issues from the article, can not be subjected to the influence of this metal simultaneously yet, can activate label 12 reliably.

In addition, under the situation that the Q of coil body 314b value significantly descends,, be preferably on the part that coil body 314b surrounded of conductive component 314a and form hole 314c as Figure 17 and shown in Figure 180.Forming on the conductive component 314a of the middle body of coil body 314b under the situation of hole 314c, even owing to can on conductive component 314a vortex flow take place by the radio wave of coil body 314b, but existence because of this hole 314c, this vortex flow only produces in the very narrow scope near coil body 314b, thereby the Q value that can suppress coil body 314b significantly descends.As a result, this transponder antenna 314, even when article surface is formed by any materials, its characteristic can not change yet, and can directly install.

Figure 19 shows the eighth embodiment of the present invention.The symbolic representation same parts identical among Figure 19 with Figure 15 and Figure 16.

Present embodiment is antenna conductive component 314a and the antenna 24 of the transponder between the coil body 314b that the soft magnetic member 26 that tabular forms is installed on above-mentioned first embodiment.Here, the details of conductive component 314a and coil body 314b is identical with above-mentioned first embodiment, and its repeat specification is omitted.

Soft magnetic member 26 can be formed by any one soft magnetic material such as the ferritic quenching solidification material of amorphous alloy, permalloy, electromagnetism steel, silicon steel, alsifer, Fe-Al alloy or soft magnetism, founding materials, rolling stock, forged material or agglomerated material.Soft magnetic member 26, its permeability and be long-pending being preferably more than 0.5 of thickness of unit representation with mm.As long as soft magnetic member 26 is magnetic, the composite material of soft magnetic metal or soft magnetism ferrite or thin slice and plastics or rubber or contain soft magnetic metal or filming of the coating of soft magnetism ferrite or thin slice can.Here,, use processing characteristics good thermoplastic plastics, perhaps use the good thermosetting plastics of heat resistance as the plastics of composite material.In addition, in soft magnetic metal powder, also can contain efflorescence powder, reduced iron powder of carboxyl iron powder, iron-permalloy etc. etc.On the other hand, as the thin slice of magnetic material, use above-mentioned powder with miniaturizations such as ball mills after, with these powder resulting thin slice of flattening mechanically; Perhaps use iron system or cobalt based amorphous alloy molten metal particles and water-cooled copper are collided resultant thin slice.

Can be under the situation of using the multiple thin slice of forming by soft magnetic metal or soft magnetism ferrite, by means of the lip-deep adhesive sheet that the mutual bonding form of thin slice is bonded in the basis material sheet material of forming by plastics, constitute soft magnetic member 26, can also be to allow these thin slices bonding mode mutually, the multiple thin slice of being made up of soft magnetic metal or soft magnetism ferrite is configured on the surface of the basis material sheet material of forming by plastics, the cover sheets of being made up of plastics covers, the laminated sheet of bonding basis material sheet material and cover sheets constitutes soft magnetic member 26.

Using under the situation of composite material as soft magnetic member 26, also can form soft magnetic member 26 by means of injection molding forming or die forming.The soft magnetic member 26 of Xing Chenging is compared with the situation that ferrite by fragility forms like this, because good toughness, even very thinly also be difficult to fragmentation.In addition, soft magnetic metal or soft magnetism ferrite dust or thin slice are dispersed in plastics or the rubber, because these thin slices or powder mutually insulated, therefore the integral body as soft magnetic member 26 does not have conductivity, even be subjected to the high frequency radio wave action, vortex flow can not take place yet.

On the other hand, when forming soft magnetic member 26 by composite material, vortex flow can not take place in order to make in soft magnetic metal or soft magnetism ferrite dust or the thin slice, the granularity of these powder or the thickness of thin slice are preferably formed in below the 20im.As plastics, preferably use the resin of insulating properties propylene, polyester, polyvinyl chloride, polyethylene, polystyrene, epoxy etc.Here, as long as the thickness of soft magnetic member 26 reaches the effect of electromagnetic shielding, not special the qualification, practical aspect is preferably in the scope of 5im～500im.

The transponder usefulness label 24 that constitutes like this, owing to carry out electromagnetic shielding by 26 couples of coil body 314b of soft magnetic member, make it avoid the influence of conductive component 314a, so improved the Q value of coil body 314b, and also implement than being easier to for the adjustment of the volume number that obtains the given coil body 314b that characteristic value carried out or scrollwork diameter, even and antenna 24 is installed to the article surface that is made of metal, also can obtain given characteristic value reliably.As a result, need not have antenna 24 in the past is installed to metal necessary space when making on the article, eliminate label 12 distinct issues from the article, can not be subjected to this metal to make the influence of article simultaneously yet, can activate label 12 reliably.

Figure 20 shows the ninth embodiment of the present invention.The symbolic representation same parts identical among Figure 20 with Figure 15 to Figure 19.

The transponder of present embodiment has with antenna 34: form the flat back side and be installed on soft magnetic member 26 and coil body 314b on the article, this coil body 314b is opened in the surface of this soft magnetic member 26, be wound into scroll, under the state of adhesion, coiling, adjust its volume number or scrollwork diameter to arrive given characteristic value.The details of coil body 314b is identical with above-mentioned first embodiment, and soft magnetic member 26 is identical with above-mentioned second embodiment.The transponder that constitutes only utilizes soft magnetic member 26 electromagnetic shieldings with antenna 34 like this, can guarantee the given characteristic value of coil body 314b effectively.

This transponder antenna 34, electromagnetic shielding by means of soft magnetic member 26, even this antenna 34 is installed to the metal surface, also can reliably obtain given characteristic value, send the radio wave of given frequency for this antenna 34 from the transceiver antenna of interrogator not shown in the figures, just can activate label 12 reliably thus.Thereby label 12 distinct issues from the article of management object can be avoided in necessary space in the time of need not having in the past antenna 34 to be installed on the metal, also are not subjected to the influence of this metal simultaneously, thereby intensify label 12 reliably.

In the 7th to the 9th above-mentioned embodiment, though coil body 314b form with roughly circular scroll, also can be, or form by the roughly foursquare scroll shown in Figure 21 or the scroll of other shapes by oval-shaped scroll roughly.

In addition, in the 7th to the 9th above-mentioned embodiment, though enumerated as the RFID of transponder with label 12,, transponder of the present invention also can be used for EAS with label, read-write equipment or other transponders with antenna.

＜experimental example 8 〉

As Figure 15 and shown in Figure 16,, be made into the coil body of external diameter 50mm, internal diameter 49mm with lining copper cash coiling 4～5 circles of diameter 0.2mm.On the other hand, as article, the low carbon steel plate of preparation 100mm * 100mm, thickness 0.16mm and be used for comparison with this low carbon steel plate same shape, onesize nonmetal acrylic panel are arranged.On the surface of this low carbon steel plate and acrylic panel, configuration is respectively as the 50mm * 50mm of conductive component, the aluminium sheet of thickness 0.2mm.Be determined on the surface of aluminum plate that places on the low carbon steel plate directly or separate given arranged spaced and have the L1 value and the Q1 value of the coil body under the situation of coil body, afterwards, measure on the surface of aluminum plate that places on the acrylic panel directly or separate given arranged spaced and have L2 value and Q2 value under the situation of coil body.And obtain L1/L2.

＜experimental example 9 〉

Between the coil body of experimental example 8 and aluminium sheet, soft magnetic member is installed.The soft magnetic member utilization is carried out the further parts of process pressurization resulting external diameter 60mm, thickness 0.34mm of injection molding forming spare with carboxyl iron 72% and poly composite material.Measurement is bonded in the coil body of embodiment 8 on the surface of this soft magnetic member 26, the back side of this soft magnetic member 26 is directly contacted with surface of aluminum plate on the low carbon steel plate that is configured in experimental example 8 or separates the L1 value and the Q1 value of the coil body under the situation of configuration with given interval.And measure L2 value and the Q2 value back side of this soft magnetic member 26 is directly contacted with surface of aluminum plate on the acrylic panel that is configured in embodiment 8 or separate the coil body under the situation of configuration with given interval.And obtain L1/L2.

＜experimental example 10 〉

Except the aluminium foil with thickness 10im replaces the aluminium sheet of experimental example 8, same with experimental example 8, the L1 value and the Q1 value of measurement coil body, the L2 value and the Q2 value of measurement coil body.And obtain L1/L2.

＜experimental example 11 〉

Except the aluminium foil with thickness 10im replaces the aluminium sheet of experimental example 9, same with experimental example 8, the L1 value and the Q1 value of measurement coil body, the L2 value and the Q2 value of measurement coil body.And obtain L1/L2.

＜comparative example 4 〉

The L1 value and the Q1 value of this coil body when measurement separates the configuration coil body as the surface of the low carbon steel plate of experimental example 8 article directly or with given interval.The L2 value and the Q2 value of the coil body when in addition, the surface of measuring acrylic panel separates the configuration coil body directly or with given interval.And obtain L1/L2.

These results are shown bright in table 4.

Table 4

	Article		Acrylic panel		Low carbon steel plate		L1/L2
	Article		Acrylic panel		Low carbon steel plate						L2 (μH)	Q2	L1 (μH)	Q1
Experimental example 8	Gap between aluminium sheet and the coil body	0 0.607 1.214 1.821 2.428	0.667 1.163 1.482 1.694 1.892	15.5 25.1 45.5 52.7 57.2	0.667 1.204 1.511 1.702 1.862	15.2 31.7 44.4 49.4 54.9					L2 (μH)	Q2	L1 (μH)	Q1	99 97 98 100 102
Experimental example 8	Gap between aluminium sheet and the coil body	0 0.607 1.214 1.821 2.428	0.667 1.163 1.482 1.694 1.892	15.5 25.1 45.5 52.7 57.2	0.667 1.204 1.511 1.702 1.862	15.2 31.7 44.4 49.4 54.9	Experimental example 9	Gap between aluminium sheet and the soft magnetic member	0 0.607 1.214 1.821 2.428	1.804 2.019 2.187 2.238	40.0 43.9 46.9 47.8	1.775 2.021 2.182 2.330	38.5 42.2 44.6 47.0	102 100 100 100	99 97 98 100 102
Experimental example 10	Gap between aluminium foil and the coil body	0 0.607 1.214 1.821 2.428	0.541 1.187 1.547 1.763 1.905	8.5 27.7 39.1 45.3 48.5	0.567 1.172 1.499 1.749 1.879	8.8 27.5 37.3 45.0 47.8	Experimental example 9	Gap between aluminium sheet and the soft magnetic member	0 0.607 1.214 1.821 2.428	1.804 2.019 2.187 2.238	40.0 43.9 46.9 47.8	1.775 2.021 2.182 2.330	38.5 42.2 44.6 47.0	102 100 100 100	95 101 103 101 101
Experimental example 10	Gap between aluminium foil and the coil body	0 0.607 1.214 1.821 2.428	0.541 1.187 1.547 1.763 1.905	8.5 27.7 39.1 45.3 48.5	0.567 1.172 1.499 1.749 1.879	8.8 27.5 37.3 45.0 47.8	Experimental example 11	Gap between aluminium foil and the soft magnetic member	0 0.607 1.214 1.821 2.428	1.885 2.219 2.281 2.456 2.586	33.1 36.4 38.2 39.2 39.3	1.969 2.146 2.329 2.507 2.549	22.0 36.6 37.9 39.1 39.5	94 99 98 98 101	95 101 103 101 101
Comparative example 4	Gap between metallic plate etc. and the coil body	0 0.607 1.214 1.821 2.428	2.968 2.968 2.968 2.968 2.968	77.2 77.2 77.2 77.2 77.2	1.213 1.359 1.612 1.801 1.963	6.8 9.3 14.5 19.3 24.1	Experimental example 11	Gap between aluminium foil and the soft magnetic member	0 0.607 1.214 1.821 2.428	1.885 2.219 2.281 2.456 2.586	33.1 36.4 38.2 39.2 39.3	1.969 2.146 2.329 2.507 2.549	22.0 36.6 37.9 39.1 39.5	94 99 98 98 101	245 218 184 165 151

Can judge comparative example 4 from table 4, the L1/L2 value increases, and when directly being configured in coil body on the metal, its rate of change increases, and in fact is used for can not activating this transponder under the situation of transponder.Like this, along with and metal between the increase at interval, its rate of change also reduces thereupon, the fact shows, in the antenna of only forming in the past, if, can not activate transponder not by there being certain thickness dividing plate to attach it on the metal covering by coil body.

On the other hand, can judge, in the experimental example 8 and experimental example 10 that aluminium sheet or aluminium foil are configured between metallic plate and the coil body, the value of the L1/L2 that expression L changes descends significantly.Thereby, even under the state on the surface that is wound on conductive component, will adjust the transponder that the number of turns or scrollwork diameter adhere with the coil body that obtains given characteristic value and directly be installed on the article that are made of metal with antenna, can expect that also it can bring into play function as antenna, judge the present invention in view of the above and set up.

Also judge in addition, in the experimental example 9 and experimental example 11 that further soft magnetic member are installed between aluminium sheet or aluminium foil and the coil body, compare with comparative example 4, the L1/L2 value reduces significantly, simultaneously, the value of Q value is compared with experimental example 8 and experimental example 10 and is improved.Because the Q value is high more, the loss that vortex flow etc. are brought is just few more, so can improve as the performance of transponder with antenna.Thereby can judge, in the present invention who soft magnetic member is installed between conductive component and the coil body, can improve function fully as antenna.

Below, with comparative example, describe the transponder real work whether embodiment that uses antenna of the present invention in detail.

＜experimental example 12 〉

As Figure 15 and shown in Figure 16,, be made into the coil body of external diameter 50mm, internal diameter 49mm with lining copper cash coiling 4～5 circles of diameter 0.2mm.The aluminium foil of preparation thickness 10im, 60mm * 60mm is as conductive component.Coil body is directly adhered to the surface of this aluminium foil, the IC chip is connected on this coil body, obtain the RFID label of so-called transponder with electric connection mode.With this transponder as experimental example 12.

＜experimental example 13 〉

By means of with the same processes of experimental example 12, make the coil body same with experimental example 5.Preparation and experimental example 12 same shapes, onesize aluminium foil and have acrylic panel with the thickness 0.607mm of the same external diameter of this aluminium foil, shape in addition.On the surface of this aluminium foil,, the IC chip is connected on this coil body, obtains the RFID label of so-called transponder with electric connection mode by this acrylic panel adhesion coil body.The interval adhesion that such and aluminium foil is separated 0.607mm has the transponder of coil body as experimental example 13.

＜experimental example 14 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.The circular hole of diameter 40mm is offered in preparation and experimental example 12 same shapes, onesize aluminium foil in addition in the central authorities of this aluminium foil.Coil body is adhered on the surface of aluminium foil in the mode of surrounding this circular hole, the IC chip is connected on this coil body, obtain the RFID label of so-called transponder with electric connection mode.Coil body adhered to transponder on the aluminium foil that is formed with this circular hole as experimental example 14.

＜experimental example 15 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.In addition preparation and experimental example 12 same shapes, onesize as conductive component aluminium foil and the composite material that contains carboxyl iron of thickness 0.34mm, profile 60mm * 60mm as soft magnetic member.On the surface of this aluminium foil,, the IC chip is connected on this coil body, obtains the RFID label of so-called transponder with electric connection mode by this composite material adhesion coil body.The soft magnetic member that forms with tabular like this is installed to transponder between conductive component and the coil body as experimental example 15.

＜experimental example 16 〉

By means of the operation identical, make the coil body same with experimental example 5 with experimental example 12.Preparation and experimental example 12 same shapes, onesize aluminium foil in addition as conductive component, the applying coating drying of sheet-containing shape Magnaglo on aluminium foil, the filming of formation thickness 0.2mm on the surface of aluminium foil as soft magnetic member.Coil body is adhered to this film coated surface, the IC chip is connected on this coil body, obtain the RFID label of so-called transponder with electric connection mode.Like this, will be installed to transponder between conductive component and the coil body as experimental example 16 as filming of soft magnetic member.

＜experimental example 17 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.Prepare thickness 0.34mm, profile 60mm * 60mm in addition, contain the composite material of carboxyl iron as soft magnetic member.At the dry coating that contains silver powder of the back side of this composite material coating, form the filming of thickness 0.15mm at the back side of composite material as conductive component.Again coil body is adhered on the composite material, the IC chip is connected on this coil body, obtain the RFID label of so-called transponder with electric connection mode.With such composite material as soft magnetic member place as conductive component film and coil body between transponder as experimental example 17.

＜experimental example 18 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.By the operation same, form the filming of thickness 0.15mm at the back side of composite material in addition as conductive component with experimental example 10.Peel off this from composite material and film, the coil body of adhering on the film coated surface as conductive component is connected to the IC chip on this coil body with electric connection mode, obtains the RFID label of so-called transponder.Have the transponder of filming as conductive component as experimental example 18 such.

＜experimental example 19 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.The discoideus ferrite sheet for preparing thickness 1mm, diameter 60mm in addition is as conductive component.Direct coil stuck body is connected to the IC chip on this coil body with electric connection mode on the surface of this ferrite sheet, obtains the RFID label of so-called transponder.Such transponder as experimental example 19.

＜comparative example 4 〉

By means of the operation identical, make the coil body same with experimental example 12 with experimental example 12.With electric connection mode the IC chip is connected on this coil body, obtains the RFID label of so-called transponder.Such transponder of forming by coil body and IC chip as a comparative example 4.

＜comparative example 5 〉

On the composite material that contains carboxyl iron of thickness 1mm, profile 40mm * 40mm, the lining copper cash of diameter 0.2mm is reeled 10 circles and produced coil body.With electric connection mode the IC chip is connected on this coil body, obtains the RFID label of so-called transponder.Like this, the transponder of forming by Wound-rotor type coil body and IC chip as a comparative example 5.

＜comparative experiments and evaluation 〉

The thickness of the transponder of the transponder of experiments of measuring example 12～experimental example 18 and comparative example 4 and 5 is configured in these transponders on the acrylic panel, and measures the L3 value and the Q3 value of coil body respectively respectively.And, as shown in figure 22, allow the transceiver antenna 21a of interrogator 21 approach to 30mm, whether confirm operate as normal.

Afterwards, as shown in figure 22, this label 12 is configured on the iron plate as the thickness 1mm of article 311, measures the L4 value and the Q4 value of coil body.And, on each label 12 under this state, make the transceiver antenna 21a of interrogator 21 approach to 30mm, whether confirm operate as normal.

The measurement result of the L3 value of coil body, L4 value and Q3 value, Q4 value and workless result is arranged, expression in table 5.

Table 5

	The structure of transponder	Thickness (mm)	Epimere 13 (μ H) hypomere 14 (μ H)	Epimere Q3 hypomere Q4	Have or not work
	The structure of transponder	Thickness (mm)	Epimere 13 (μ H) hypomere 14 (μ H)	Epimere Q3 hypomere Q4	Have or not work	Experimental example 12	Aluminium foil	0.45	0.541 0.567	8.5 8.8	Have
Experimental example 13	Gap with aluminium foil	1.06	1.187 1.172	27.7 27.7	Have	Experimental example 12	Aluminium foil	0.45	0.541 0.567	8.5 8.8	Have
Experimental example 13	Gap with aluminium foil	1.06	1.187 1.172	27.7 27.7	Have	Experimental example 14	The aluminium foil of band circular hole	0.45	1.127 1.067	27.7 13.8	Have
Experimental example 15	Composite material and aluminium foil	0.85	1.855 1.969	33.1 22.0	Have	Experimental example 14	The aluminium foil of band circular hole	0.45	1.127 1.067	27.7 13.8	Have
Experimental example 15	Composite material and aluminium foil	0.85	1.855 1.969	33.1 22.0	Have	Experimental example 16	Magnetic coating film and aluminium foil	0.7	1.754 1.844	36.7 36.8	Have
Experimental example 17	Composite material and conductive coating	0.8	1.790 1.8207	36.8 36.9	Have	Experimental example 16	Magnetic coating film and aluminium foil	0.7	1.754 1.844	36.7 36.8	Have
Experimental example 17	Composite material and conductive coating	0.8	1.790 1.8207	36.8 36.9	Have	Experimental example 18	Conductive coating	0.5	0.808 0.781	11.4 12.8	Have
Experimental example 19	Ferrite sheet	1.5	4.611 4.261	60.3 38.9	Have	Experimental example 18	Conductive coating	0.5	0.808 0.781	11.4 12.8	Have
Experimental example 19	Ferrite sheet	1.5	4.611 4.261	60.3 38.9	Have	Comparative example 4	Single coil	0.4	2.969 1.231	77.2 6.8	Have or not
Comparative example 5	The Wound-rotor type coil	2	4.356 4.449	88.4 60.4	Have or not	Comparative example 4	Single coil	0.4	2.969 1.231	77.2 6.8	Have or not

Can judge from table 5, in comparative example 5, transponder is configured under the situation on the metal, L and Q both sides change very greatly, and the transponder that is disposed under the situation of metal can not normally be worked.In addition, in comparative example 5, though the variation that transponder is configured in L under the situation on the metal and Q both sides little than embodiment 2,, be configured in the transponder cisco unity malfunction under the situation on the metal.It seems that this situation is caused by following reason, promptly because the magnetic core direction of so-called Wound-rotor type coil becomes the shaft core direction of coil, so can not send the radio wave that comes from as the transceiver antenna of the approaching interrogator of the direction of the metal surface orthogonal of article.

On the other hand, can judge, at experimental example 12～experimental example 16 and have in the experimental example 17 and experimental example 18 of the electroconductive component of forming by conductive coating with the conductive component that constitutes by aluminium foil, L and Q both sides' value itself is all smaller, its variation is also smaller, and the transponder under situation about being disposed on the metal can normally be worked.Can judge again, compare, gapped experimental example 13 is set reach the experimental example 14 that on aluminium foil, forms circular hole, improve L and Q both sides' value with the experimental example 12 that directly coil body is adhered on the aluminium foil.Can also judge, soft magnetic member is arranged on experimental example 15～17 between conductive component and the coil body, further improve L and Q both sides' value.Thereby can judge, soft magnetic member is arranged on the present invention between conductive component and the coil body, can improve function fully as antenna.

Further, can judge, adhesion has the experimental example 19 of coil body on the surface of the ferrite sheet of so-called soft magnetic member, can further improve L and Q both sides' value, and transponder itself can normally be worked.Thereby also can judge, only, just can guarantee the given characteristic value of coil body,, also can obtain given characteristic value reliably, and can normally work even transponder is installed on the metal by means of the electromagnetic shielding of soft magnetic member.

Application on the industry

In sum, according to the present invention, form core components owing to utilized the core components that forms with the ferrite sintered body of fragility to compare composite material with toughness, and this core components be with the plane in be wound into the plane almost parallel of scroll air core coil mode insert in this air core coil, so can improve the rigidity of aerial coil.In addition, constitute in the composite material of core components, soft magnetic metal, noncrystalline or ferrite dust or thin slice are to be dispersed in plastics or the rubber, its powder or thin slice mutually insulated, thereby there is not conductivity as core components integral body, even under the influence of high frequency radio wave, can not produce vortex flow yet.Therefore, even under higher frequency, the reduction because of the caused Q value of the generation of vortex flow can not take place yet, and can obtain the aerial coil that yet can fully use under upper frequency.

In addition, if pass through composite material injection molding forming or die forming or roll forming formation core components, then can form relatively thinner core components, if use to apply dry formed magnetic coating film as the composite material of core components, then can obtain the core components of the following thickness of 0.8mm that injection molding forming or die forming aspect be difficult to be shaped.As a result, can suppress to be installed to the overhang of aerial coil from the article under the situation of article significantly.

Moreover, if it is stacked non magnetic and the conductive plate of conductivity arranged on a face of the air core coil that inserts core components, because this conductive plate can shield the radio wave by article, so just need between aerial coil and article, not insert dividing plate, so just, can be less than from the outstanding amount of the article of management object under the state of situation in the past at aerial coil, aerial coil still can be worked reliably.

In addition, according to the present invention, owing to have insulating element, on the surface of insulating element, wriggle and alternately form toward road portion and a series of electric conductors that return road portion, and first core components that is bonded in the insulating element back side arranged, so the magnetic flux that is produced by the electric current that flows through electric conductor becomes after by first core components parallel with the article surface that aerial coil is installed.In addition, because first core components is bonded in the insulating element back side, this first core components and past road portion are not overlapped, and cover the road portion that returns, so pass through the magnetic flux of first core components from the inside of insulating element, the part diffusion of its end, by toward the top of road portion, turn back to first core components of adjacency once more, even thereby article surface be metal, not influenced by it, can work reliably.

If second core components is bonded on the surface of insulating element, make this second core components and return road portion and do not overlap but cover toward road portion, and its end overlaps with the end of first magnetic part of adjacency, then magnetic flux alternately moves through first and second core components, sees through this first and second core components simultaneously.Therefore, or toward road portion with return the surface and the back side that road portion alternately is present in magnetic flux, or comprise this and become same parts toward road portion and a series of electric conductors that return road portion and the aerial coil that is wound on around this magnetic flux, and then the aerial coil that just can more easily obtain having the characteristic identical with the aerial coil in the past that Wire-wound is made at the outer peripheral face of core components, and can improve its mass productivity.Further, if by be formed on the lip-deep multiple conducting wires of insulating element mutually along the given interval that separates sinuously, form a series of electric conductors, then can increase the past road portion and the number of returning road portion at the surface that alternately is in magnetic flux and the back side, so just can easily increase so-called winding turns, by increasing the number of turns of this coiling, can improve the characteristic of aerial coil.

If by etching or stamping-out or silk screen printing or evaporation formation electric conductor, just be easy on insulating element, form electric conductor, if the plate of the powder that first or second core components is made up of soft magnetic metal, noncrystalline or ferrite or the composite material of thin slice and plastics, soft magnetic metal or paper tinsel, noncrystalline paper tinsel or its stacking material or ferrite constitute, then core components is thinner, thereby can make the integral thickness attenuation of aerial coil.Particularly, by magnetic coating film as core components, just can obtain thinner core components, be difficult to the thinner aerial coil of core components by the following thickness of 0.8mm of injection molding forming.

According to the present invention, owing to have: the coil body that planar is wound into the conductor composition of scroll; So that an end is positioned at by the central portion of coil body encirclement and the part of crosscut coil body, the mode that the other end is positioned at the outside of coil body is bonded in the tabular or sheet core components on face of coil body, can improve its Q value in thin keeping aerial coil.In addition, the magnetic flux that electric current produced that flows through the coil body that is formed by conductor passes this core components, its flow direction is surperficial parallel with article, even thereby be installed in this label on the surface that forms by metal of article with aerial coil, the metal that also can suppress this article surface produces vortex flow, even be bonded on the metal, also can obtain the aerial coil of reliably working.

If conductor 211 is wound on scroll on the interarea of electrical insulating film or thin slice, form coil body, core components is layered on another interarea, then can obtain aerial coil by fairly simple operation.With the shown in Figure 23 in the past aerial coil of Wire-wound on the outer peripheral face of core components compared, can improve mass productivity.If ink that contains magnetic or applying coating and be dried to electrical insulating film or another interarea of sheet material on, can obtain the core components of the following thickness of 0.8mm that injection molding forming or die forming aspect be difficult to be shaped, can form thickness aerial coil as thin as a wafer.Thus, the overhang of the aerial coil in the time of suppressing to be installed to article significantly from the article.

Have, when core components being configured in a side that is connected in article, the magnetic flux major part that electric current produced that flows through coil body is seldom passed through article by this core components again.In addition, if sheet or the tabular conductive component that waits are bonded on the face of coil body in the mode that covers core components since between coil body that conductor forms and the article across this conductive component, this conductive component energy radio wave shield be passed through article.Thus, even article surface is formed by metal, the loss that is caused by vortex flow that produces on this metal covering etc. can not take place yet.As a result, aerial coil is worked reliably.

Except that above-mentioned, according to the present invention, owing to also have: will form the flat back side and be installed to conductive component on the article; Directly or separate given interval and be wound on scroll on the surface of conductive component, under adhesion, the state of reeling, adjust its volume number or scrollwork diameter and obtain the coil body of given characteristic value; So, even this antenna directly is installed on the article of the management object that metal forms, the characteristic value of coil body can not change significantly yet, need not have in the past be installed to antenna on the metal time necessary space, can avoid transponder from the outstanding big problem of the article of management object.

In addition, if between conductive component and coil body, soft magnetic member is installed, by means of this soft magnetic member, coil body just can shield from the electromagnetism on the conductive component, improve the Q value of coil body, and can more easily carry out adjusting the coil body number of turns or scrollwork diameter for obtaining given characteristic value, even and this antenna directly is installed on the article surface that metal forms, also can obtain given characteristic value reliably.

Further, if the back side of soft magnetic member is installed on the article, the coil body that is wound into scroll directly or separate on the surface that given compartment of terrain adheres to soft magnetic member, when then under the state that antenna is installed on the article that form by metal, sending radio wave, because what soft magnetic member shield radio wave direction metal part was divided passes through, so on this metal part, do not produce vortex flow.As a result,, do not need necessary in the past dividing plate, so can prevent in article transport antenna and contacting of object on every side even article are formed by metal yet.

Claims

1, aerial coil, it comprises: the air core coil (12) that planar is wound into scroll; And insert the tabular core components (13) of described air core coil (12) in the mode on the plane that is roughly parallel to described air core coil (12), it is characterized in that,

Described core components (13) is that the composite material by soft magnetic metal, noncrystalline or ferrite dust or thin slice and plastics or rubber forms.

2, aerial coil according to claim 1 is characterized in that, described core components (13) is by forming composite material injection molding forming or die forming or by rolling postforming.

3, aerial coil according to claim 1 is characterized in that, described core components (13) is by the coating composite material and carries out dry formed magnetic coating film.

4, aerial coil, it comprises: the air core coil (12) that planar is wound into scroll; And insert the tabular core components (13) of described air core coil (12) in the mode on the plane that is roughly parallel to described air core coil (12), it is characterized in that,

On a face of the air core coil (12) that inserts core components (13), be laminated with non magnetic and the conductive plate (14) of conductivity is arranged.

5, aerial coil according to claim 4 is characterized in that, conductive plate is to be made of copper or copper alloy or aluminum or aluminum alloy.

6, aerial coil according to claim 5 is characterized in that, the thickness of conductive plate is 0.01～2mm.

7, aerial coil, it comprises: the insulating element (111) that is formed by electrical insulating film or electric insulation sheet material;

The ground that wriggles on the surface of described insulating element (111) alternately forms toward road portion (112a) and returns a series of electric conductors (112) of road portion (112b); And

Be bonded in described insulating element (111) back side, do not overlap toward road portion (112a), and cover described first core components (113) of returning road portion (112b) from the back side of described insulating element (111) with described.

8, aerial coil according to claim 7, it is characterized in that, on the surface of described insulating element (111), be bonded with second core components (114), make this second core components (114) and return road portion (112b) and do not overlap, and cover toward road portion (112a), and its end overlaps with the end of first magnetic part (113) of adjacency, and described second core components (114) constitutes: the face side of locating to direct into described insulating element (111) by the magnetic flux of described first magnetic part (113) in described past road portion (112a).

9, according to claim 7 or 8 described aerial coils, it is characterized in that, electric conductor (112) has the lip-deep multiple conducting wires (21,22) that also is formed on insulating element (111) in the mode that separates given interval, follows each other sinuously, the top portion of the lead (22) of the terminal part of described lead (21) and adjacency links together, and constitutes a series of electric conductors (112).

10, according to each described aerial coil in the claim 7～9, it is characterized in that, by carrying out etching by given pattern to being adhered to the whole lip-deep conductivity paper tinsel of insulating element (111), perhaps electric conducting material is arrived on the surface of described insulating element (111) by given pattern silk screen printing or evaporation, on the surface of described insulating element (111), form electric conductor (112).

11, according to each described aerial coil in the claim 7～10, it is characterized in that the either or both of first core components (113) and second core components (114) is the powder formed of soft magnetic metal, noncrystalline or ferrite or the composite material of thin slice and plastics, plate or paper tinsel, noncrystalline paper tinsel or its stacking material or the ferrite of soft magnetic metal.

12, according to each described aerial coil in the claim 7～10, it is characterized in that, the either or both of first core components (113) and second core components (114) is made of magnetic coating film, this magnetic coating film is by containing the ink of magnetic or applying coating to described insulating element (111), makes it dry and forms.

According to each described aerial coil in the claim 7～12, it is characterized in that 13, the back side in insulating element (111) is bonded with sheet or tabular conductive component (116) in the mode that covers first core components (113).

14, the label aerial coil is characterized in that, it comprises: the coil body (211a) that planar is wound into conductor (211) formation of scroll; And

So that an end (213a) is positioned at the central portion (211b) that surrounded by described coil body (211a) and the part of the described coil body of crosscut (211a), the mode that the other end (213b) is positioned at the outside of described coil body (211a), be bonded in the tabular or sheet core components (213) on face of described coil body (211a).

15, label aerial coil according to claim 14 is characterized in that, described coil body is that (211a) is by carrying out stamping-out formation to electrically conductive plate or paper tinsel.

16, label aerial coil according to claim 14, it is characterized in that, by the conductivity paper tinsel on whole an of interarea being adhered to electrical insulating film or sheet material (212) is carried out etching by given pattern, perhaps electric conducting material is arrived on the interarea of described electrical insulating film or sheet material (212) by given pattern silk screen printing or evaporation, form coil body.

17, according to each described label aerial coil in the claim 14～16, it is characterized in that, core components (213) is the plate of composite material, soft magnetic metal of the powder formed of soft magnetic metal, noncrystalline or ferrite or thin slice and plastics or paper tinsel, noncrystalline paper tinsel or its stacking material, ferrite, or the ink that contains magnetic or applying coating on electrical insulating film or sheet material and make it dry formed magnetic coating film.

18, label aerial coil according to claim 16, it is characterized in that, core components (213) is a magnetic coating film, and this magnetic coating film is by containing the ink of magnetic or applying coating to another interarea of electrical insulating film or sheet material (212), makes it drying and forms.

According to each described label aerial coil in the claim 14～18, it is characterized in that 19, sheet or tabular conductive component (216) are to be bonded on the face of coil body (211a) in the mode that covers core components (213).

20, radio-frequency (RF) identification label, it comprises: be installed to each described aerial coil (10) in the claim 14～19 on the article (18); And be electrically connected to the I C chip that the different intrinsic information of each described article (18) was gone up and stored to described aerial coil (10), it is characterized in that,

Described aerial coil (10) is installed on the described article (18), makes core components (213) between described article (18) and coil body (211a).

21, transponder antenna, it is to be electrically connected on IC chip (313) or the capacitor and to be installed to transponder antenna on the article (311), it is characterized in that it comprises:

To form the flat back side and be installed to conductive component (314a) on the described article (311); And

Be wound on the surface of described conductive component (314a) with scroll by insulating element (316), and under the state of adhesion, coiling, adjust its volume number or scrollwork diameter coil body (314b) to obtain given characteristic value.

22, transponder antenna according to claim 21 is characterized in that, described conductive component (314a) is 1cm at width, the resistance when length is 1cm is below 5U.

According to claim 21 or 22 described transponder antennas, it is characterized in that 23, conductive component (314a) is sheet material or plate or paper tinsel or the conductor that the scroll two ends are linked together.

24, according to claim 21 or 22 described transponder antennas, it is characterized in that, insulating element (316) is non-conductive sheet, plate or paper tinsel, conductive component (314a) is that the conductivity ink is coated to the back side of described insulating element (316) and carries out the conductive coating that drying forms, and coil body (314b) is wound on the surface of described insulating element (316) and adheres on this surface.

25, according to claim 21 or 22 described transponder antennas, it is characterized in that, conductive component (314a) is the electrodeposited coating or the vapor-deposited film of conductivity that is layered in the inside of non-conductive sheet material (316), plate or paper tinsel, and coil body (314b) is wound on the surface of described sheet material (316), plate or paper tinsel and adheres on this surface.

According to claim 24 or 25 described transponder antennas, it is characterized in that 26, the gap between conductive component (314a) and the coil body (314b) is 0.01～5mm.

27, according to each described transponder antenna in the claim 21～26, it is characterized in that, form porose (314c) in the part of surrounding by the coil body (314b) of conductive component (314a).

28, according to each described transponder antenna in the claim 21～27, it is characterized in that, between conductive component (314a) and coil body (314b), soft magnetic member (26) is installed.

29, transponder antenna, it is to be electrically connected on IC chip (313) or the capacitor and to be installed to transponder antenna on the article (311), it is characterized in that it comprises:

To form the flat back side and be installed to soft magnetic member (26) on the described article (311); And

Be wound on scroll on the surface of described soft magnetic member (26), and under the state of adhesion, coiling, adjust its volume number or scrollwork diameter coil body (314b) to obtain given characteristic value.

30, according to claim 28 or 29 described transponder antennas, it is characterized in that described soft magnetic member (26), its permeability and be the amassing of thickness of unit representation with mm more than 0.5.

31, according to each described transponder antenna in the claim 28～30, it is characterized in that soft magnetic member (26) is formed by any one soft magnetic material of the ferritic quenching solidification material of amorphous alloy, permalloy, electromagnetism steel, silicon steel, alsifer, Fe-Al alloy or soft magnetism, founding materials, rolling stock, forged material or agglomerated material.

32, according to each described transponder antenna in the claim 28～30, it is characterized in that soft magnetic member (26) is the composite material of soft magnetic metal or soft magnetism ferrite or thin slice and plastics or rubber or contains soft magnetic metal or the filming of the coating of soft magnetism ferrite or thin slice.

33, according to each described transponder antenna in the claim 28～30, it is characterized in that soft magnetic member (26) is the lip-deep adhesive sheet that the multiple thin slice of soft magnetic metal or soft magnetism ferrite composition is bonded in the basis material sheet material of being made up of plastics in thin slice mode bonded to each other.

34, according to each described transponder antenna in the claim 28～30, it is characterized in that, soft magnetic member (26) is to be configured in the multiple thin slice that soft magnetic metal or soft magnetism ferrite are formed on the surface of the basis material sheet material of being made up of plastics in described thin slice mode bonded to each other, the cover sheets of being made up of plastics covers, and the laminated sheet that described basis material sheet material and described cover sheets are bonded together.